abbr.you are 你(你们)是;
例句:
I don't have the least idea of what you're talking about.
我一点儿都不知道你在说什么。
Lumbar support is very important if you're driving a long way.
长途驾驶时,腰部的支撑十分重要。
I'll have them paged and tell them you're here.
我会叫人呼他们,告诉他们你在这儿。