...Note for the definition of the OK-limits » 注意到定义的确定时限 you are a native speaker » 你是母语的人 ҪHBr gas was bubbled for 2 h in a solution of metacrylic acid (5ml),at room temperature The reaction mixture was purifi...
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你有机会和母语是英语的人交流吗？
作为一个语言学习者，你一定听过母语是说英语的人引用一些电影里的标语或台词。
As a language learner, you will probably hear native speakers use catchphrases or quotes they've heard from movies.
和以英语为母语的人聊天是提高你英语口语水平的好方法。
Talking with native speakers is a great way to improve your spoken English.
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