Is there any significance at all, for example, in the number of photons that are hitting the metal or being absorbed by the metal.

举例来说，若干个光子撞击金属,或者被金属吸收究竟是否有意义。

麻省理工公开课 - 化学原理课程节选

There were people goldsmiths were people who worked in the metal gold and made beautiful things for people jewelry and other things.

有人，比如金匠就是是,铸造金的形状,并且为人民铸造美丽的东西的一群人,包括珠宝和一些其它的东西。

耶鲁公开课 - 金融市场课程节选