英语是我们交流中一种有用的工具。
同时我也清楚的知道，英语是用来交流的工具，学它就是为了用它。
Meanwhile, I know that English is a communication tool and to learn it is to practice it.
英语作为一门语言，是人们进行沟通和信息交流的工具。
English, as a language, is a tool for human beings to communicate and exchange information.
应用推荐