在说某人做了某事时，我们可能也在执行某项行动。
In saying that someone did something， we may be doing something ourselves.
The leather industry must evolve or risk becoming obsolete.
The market is a reflection of the collective knowledge of all participants.
Music is the only thing that makes sense anymore.
没有一些你想要的东西是幸福不可或缺的一部分。
解析：通过实践磨练自己。