电镀金属就是把金属薄薄地覆盖上一层金或银等。

To plate metal is to cover it with a thin layer of gold, or silver, etc.

youdao

其成立日，美国将美元定义为一个明确的黄金或银的重量。

In its founding days, the United States defined the dollar by an explicit weight of gold or silver.

youdao

项目组合管理的规程和桥梁建造或银的锻造的规程都是规程。

This is as true for portfolio management as a discipline as it is for bridge construction or silver smithing, which are also disciplines.

youdao

So you build it with a material like silver and gold, and then you encounter the problems of society that your bridge might get stolen because somebody thinks they have a better use for silver and gold than your bridge.

但如果你用金或银这样的材料,你又会面对新的问题,你的桥会被偷走,因为有人认为金和银有比造桥更好的用途

耶鲁公开课 - 生物医学工程探索课程节选