diff --git a/dubbo-common/src/main/java/com/alibaba/dubbo/common/URL.java b/dubbo-common/src/main/java/com/alibaba/dubbo/common/URL.java
index 2f40c73309..7827af3bda 100644
--- a/dubbo-common/src/main/java/com/alibaba/dubbo/common/URL.java
+++ b/dubbo-common/src/main/java/com/alibaba/dubbo/common/URL.java
@@ -116,7 +116,7 @@ public final class URL implements Serializable {
         this(protocol, null, null, host, port, null, (Map<String, String>) null);
     }
 
-    public URL(String protocol, String host, int port, String[] pairs) { // 变长参数...与下面的path参数冲突，改为数组
+    public URL(String protocol, String host, int port, String[] pairs) { // varargs ... confilict with the following path argument, use array instead.
         this(protocol, null, null, host, port, null, CollectionUtils.toStringMap(pairs));
     }
 
diff --git a/dubbo-common/src/main/java/com/alibaba/dubbo/common/beanutil/JavaBeanSerializeUtil.java b/dubbo-common/src/main/java/com/alibaba/dubbo/common/beanutil/JavaBeanSerializeUtil.java
index 284a1e2ef5..d89f4c0603 100644
--- a/dubbo-common/src/main/java/com/alibaba/dubbo/common/beanutil/JavaBeanSerializeUtil.java
+++ b/dubbo-common/src/main/java/com/alibaba/dubbo/common/beanutil/JavaBeanSerializeUtil.java
@@ -413,7 +413,7 @@ public final class JavaBeanSerializeUtil {
     }
 
     /**
-     * 把 Class.forName 的返回值转换为 Class.
+     * Transform the Class.forName String to Class Object.
      *
      * @param name Class.getName()
      * @return Class
diff --git a/dubbo-common/src/main/java/com/alibaba/dubbo/common/status/support/MemoryStatusChecker.java b/dubbo-common/src/main/java/com/alibaba/dubbo/common/status/support/MemoryStatusChecker.java
index 05ff77b6c6..c8ea8f37ac 100644
--- a/dubbo-common/src/main/java/com/alibaba/dubbo/common/status/support/MemoryStatusChecker.java
+++ b/dubbo-common/src/main/java/com/alibaba/dubbo/common/status/support/MemoryStatusChecker.java
@@ -31,7 +31,7 @@ public class MemoryStatusChecker implements StatusChecker {
         long freeMemory = runtime.freeMemory();
         long totalMemory = runtime.totalMemory();
         long maxMemory = runtime.maxMemory();
-        boolean ok = (maxMemory - (totalMemory - freeMemory) > 2048); // 剩余空间小于2M报警
+        boolean ok = (maxMemory - (totalMemory - freeMemory) > 2048); // Alarm when spare memory < 2M
         String msg = "max:" + (maxMemory / 1024 / 1024) + "M,total:"
                 + (totalMemory / 1024 / 1024) + "M,used:" + ((totalMemory / 1024 / 1024) - (freeMemory / 1024 / 1024)) + "M,free:" + (freeMemory / 1024 / 1024) + "M";
         return new Status(ok ? Status.Level.OK : Status.Level.WARN, msg);
diff --git a/dubbo-common/src/main/java/com/alibaba/dubbo/common/threadpool/support/AbortPolicyWithReport.java b/dubbo-common/src/main/java/com/alibaba/dubbo/common/threadpool/support/AbortPolicyWithReport.java
index eb414e2cec..9246d96a8f 100644
--- a/dubbo-common/src/main/java/com/alibaba/dubbo/common/threadpool/support/AbortPolicyWithReport.java
+++ b/dubbo-common/src/main/java/com/alibaba/dubbo/common/threadpool/support/AbortPolicyWithReport.java
@@ -69,7 +69,7 @@ public class AbortPolicyWithReport extends ThreadPoolExecutor.AbortPolicy {
     private void dumpJStack() {
         long now = System.currentTimeMillis();
 
-        //十分钟打一次
+        //dump every 10 minutes
         if (now - lastPrintTime < 10 * 60 * 1000) {
             return;
         }
diff --git a/dubbo-common/src/main/java/com/alibaba/dubbo/common/utils/ReflectUtils.java b/dubbo-common/src/main/java/com/alibaba/dubbo/common/utils/ReflectUtils.java
index 2a00d55491..88f4516a00 100644
--- a/dubbo-common/src/main/java/com/alibaba/dubbo/common/utils/ReflectUtils.java
+++ b/dubbo-common/src/main/java/com/alibaba/dubbo/common/utils/ReflectUtils.java
@@ -252,12 +252,12 @@ public final class ReflectUtils {
         try {
             ParameterizedType parameterizedType = ((ParameterizedType) cls.getGenericInterfaces()[0]);
             Object genericClass = parameterizedType.getActualTypeArguments()[i];
-            if (genericClass instanceof ParameterizedType) { // 处理多级泛型
+            if (genericClass instanceof ParameterizedType) { // handle nested generic type
                 return (Class<?>) ((ParameterizedType) genericClass).getRawType();
-            } else if (genericClass instanceof GenericArrayType) { // 处理数组泛型
+            } else if (genericClass instanceof GenericArrayType) { // handle array generic type
                 return (Class<?>) ((GenericArrayType) genericClass).getGenericComponentType();
             } else if (((Class) genericClass).isArray()) {
-                // 在 JDK 7 以上的版本, Foo<int[]> 不再是 GenericArrayType
+                // Requires JDK 7 or higher, Foo<int[]> is no longer GenericArrayType
                 return ((Class) genericClass).getComponentType();
             } else {
                 return (Class<?>) genericClass;
diff --git a/dubbo-common/src/test/java/com/alibaba/dubbo/common/URLTest.java b/dubbo-common/src/test/java/com/alibaba/dubbo/common/URLTest.java
index ec9258215d..a670c3c405 100644
--- a/dubbo-common/src/test/java/com/alibaba/dubbo/common/URLTest.java
+++ b/dubbo-common/src/test/java/com/alibaba/dubbo/common/URLTest.java
@@ -17,6 +17,7 @@
 package com.alibaba.dubbo.common;
 
 import com.alibaba.dubbo.common.utils.CollectionUtils;
+
 import org.junit.Test;
 
 import java.io.File;
@@ -243,7 +244,7 @@ public class URLTest {
         assertEquals("noValue", url.getParameter("noValue"));
     }
 
-    // TODO 不希望空格？ 详见： DUBBO-502 URL类对特殊字符处理统一约定
+    // TODO Do not want to use spaces? See: DUBBO-502, URL class handles special conventions for special characters.
     @Test
     public void test_valueOf_spaceSafe() throws Exception {
         URL url = URL.valueOf("http://1.2.3.4:8080/path?key=value1 value2");
@@ -257,7 +258,7 @@ public class URLTest {
 
         assertTrue(url.hasParameter("k0"));
 
-        // 没有Value的Key，生成的Value值使用Key值！！ -_-!!!
+        // If a Key has no corresponding Value, then the Key also used as the Value.
         assertEquals("k0", url.getParameter("k0"));
     }
 
diff --git a/dubbo-common/src/test/java/com/alibaba/dubbo/common/extensionloader/ext1/SimpleExt.java b/dubbo-common/src/test/java/com/alibaba/dubbo/common/extensionloader/ext1/SimpleExt.java
index 0c7460f129..1d5c263fe6 100644
--- a/dubbo-common/src/test/java/com/alibaba/dubbo/common/extensionloader/ext1/SimpleExt.java
+++ b/dubbo-common/src/test/java/com/alibaba/dubbo/common/extensionloader/ext1/SimpleExt.java
@@ -25,13 +25,13 @@ import com.alibaba.dubbo.common.extension.SPI;
  */
 @SPI("impl1")
 public interface SimpleExt {
-    // 没有使用key的@Adaptive ！
+    // @Adaptive example, do not specify a explicit key.
     @Adaptive
     String echo(URL url, String s);
 
     @Adaptive({"key1", "key2"})
     String yell(URL url, String s);
 
-    // 无@Adaptive ！
+    // no @Adaptive
     String bang(URL url, int i);
 }
\ No newline at end of file
diff --git a/dubbo-common/src/test/java/com/alibaba/dubbo/common/extensionloader/ext2/Ext2.java b/dubbo-common/src/test/java/com/alibaba/dubbo/common/extensionloader/ext2/Ext2.java
index bae8ea7c5d..db6723e865 100644
--- a/dubbo-common/src/test/java/com/alibaba/dubbo/common/extensionloader/ext2/Ext2.java
+++ b/dubbo-common/src/test/java/com/alibaba/dubbo/common/extensionloader/ext2/Ext2.java
@@ -25,7 +25,7 @@ import com.alibaba.dubbo.common.extension.SPI;
  */
 @SPI
 public interface Ext2 {
-    // 方法参数的属性是URL！
+    // one of the properties of an argument is an instance of URL.
     @Adaptive
     String echo(UrlHolder holder, String s);
 
diff --git a/dubbo-common/src/test/java/com/alibaba/dubbo/common/utils/ConfigUtilsTest.java b/dubbo-common/src/test/java/com/alibaba/dubbo/common/utils/ConfigUtilsTest.java
index f265daa246..3969b01168 100644
--- a/dubbo-common/src/test/java/com/alibaba/dubbo/common/utils/ConfigUtilsTest.java
+++ b/dubbo-common/src/test/java/com/alibaba/dubbo/common/utils/ConfigUtilsTest.java
@@ -66,7 +66,7 @@ public class ConfigUtilsTest {
     }
 
     /**
-     * 测试点1：用户配置-default，会删除所有默认参数
+     * Test Point 1: The user configures -default, which will delete all the default parameters
      */
     @Test
     public void testMergeValuesDelete() {