Firming
vt.& vi. 使坚固（firm的现在分词形式）
🗣️ 情景例句
In about 30 minutes.
大约半小时后。
While waiting for the train I killed time by reading a book.
在等火车的时候我看书来消磨时间。
Anyway, as Brian pointed out, it is the easiest thing in the world to give up smoking.
不管怎么说，正如布赖恩指出的那样，戒烟是世界上最容易的事情，