1.這是什麼意思?
Whats the meaning of this?
2.你這是什麼意思?
What do you mean?
3.你到底是什麼意思?
What on earth do you mean?
4.我不懂這個詞是什麼意思。
I dont understand what the word means.
5.我不明白他說的什麼意思。
I couldnt make out what he was saying。
6. 我真不知道他這是什麼意思。
I really dont know what he meant by that.