n.世界最大钻石之一

How can I persuade you of my sincerity? 我如何能够让你相信我的诚意？

I am a hundred percent in agreement with you. 我百分之百同意你的看法。

I am well aware that this is a tough job. 我深知这是一件棘手的工作。

I beg your pardon. I suppose I should have knocked. 请原谅，我想我本该敲门的。

I believe he has started reading up anthropology. 我相信他已开始攻读人类学。

I bought a pair of tan leather shoes the other day. 前几天我买了双棕褐色的皮鞋。