Perf.
abbr. 穿孔（perforate）
🗣️ 情景例句
And what does your father do?
令尊是做什么的？
Money is often lost for want of money.
往往由于缺乏金钱而丧失金钱。
As is so often pointed out, knowledge is a two-edged weapon which can be used equally for good or evil.
正像人们常常指出的，知识是一把双刃刀，可以用于造福，也可以用来为害。