Cams
n. 凸轮（cam的复数）
🗣️ 情景例句
How many karats do you want?
你要几克拉的？
It is convenient to know the language.
掌握这门语言会带来方便。
It may also be said that rational, industrious,useful.
也可以这样说，理智的、勤劳的、有用的。