We can not live without air and water. 没有空气和水，我们无法生存。

Honesty is the best policy. 诚实为上策。

Beauty is in the eye of the beholder. 情人眼里出西施。

I've got two pieces of baggage/luggage. 我有两件行李。

Suddenly, I had a fit of coughing and couldn't speak.

突然间我一阵咳嗽，无法讲话。

I'd like a pot of tea, and two pieces/slices of toast with strawberry jam.

我要一壶茶和两片吐司加草莓果酱。