Question:

　　Dear abc,

　　please tell me how to explain the following sentence:"The theory must go hand in hand with practice is a principle we should always keep in mind."

　　qimaomao

　　Answer:

　　Dear Qimaomao，

　　这个句子句型和汉语正好倒过来，现翻译如下：

　　“我们应该时刻牢记这样一个原则：理论联系实际。”

　　Yours abc