Jef
n. (Jef)人名；(法)热夫；(荷)耶夫
🗣️ 情景例句
Five?
5号
I do feel mad about making that stupid mistake.
我犯了那个愚蠢的错误确实懊恼不已。
If explosives are used, vibrations will cause the roof of the mine to collapse.
如果用炸药爆破，震动会引起矿顶塌落。