Ferrofluid
铁磁流体
🗣️ 情景例句
He's hooked on cocaine.
他吸咖啡因上瘾。
You don't have to pay any duty on personal belongings.
你不必在个人财产上付任何税。
in order that an individual or a group of individuals may earn as much money as possible.
为的是让某个个人或某一部分人尽可能多地赚钱。