I don't know whether you often use Google's online translation or toolbar. If you use it, you will know how considerate the function of selecting words for translation is. However, you need to pay attention that generally you need to choose to translate Chinese into English or English into Chinese, so as to get the translation. Today, I will introduce to you such a browser plug-in, which can automatically judge whether the selected characters are Chinese or English and thus choose the translation method. It still uses Google's translation.
If your browser is The World Window or Maxthon, you can't miss it. Download and try it.