Everything -- gold, silver, diamonds, particles -- everything accelerates the same way in a gravitational field, due to this remarkable fact.

所有东西,金,银,钻石,粒子,所有东西,在引力场作用下都以相同的方式加速,原因就是这个显著的事实

耶鲁公开课 - 基础物理课程节选

But I bought last year for my girlfriend a very nice diamond ring.

但我去年给我女朋友买了一个很漂亮的钻石戒指。

强烈推荐购物 - SpeakingMax英语口语达人