Perf
n. 穿孔
🗣️ 情景例句
The smog in L.A. is caused by air pollution and water vapor.
洛杉矶的烟雾是由空气污染和水蒸气造成的。
He insisted that he was innocent.
他坚称自己是无辜的。
We can't afford all that money.
我们花不起那么多钱。