We call it black diamond for a reason because it really works.

我们称它为黑钻石是有原因的，因为它确实有效。

The company announced this week that it will sell a black diamond that they say is believed to have fallen to Earth from outer space.

该公司本周宣布，将拍卖一颗黑色钻石，据信这颗黑钻石是从外太空坠落到地球上的。