什么是水军:What`s the mean of "put sb sleep"

What`s the mean of "put sb sleep" What's the mean of exchange student? left-of-center, what's mean? what's mean of messed around ? what is the mean of function ? WHAT IS THE MEAN OF TRANSFER PRICES? what's the term of "sliding moment" mean? What's the DOZ mean? what do you mean by "日本" in English? what's the meaning of the word? what's mean of Metal glove protection ?