Lach
[医][=lachrymator]催泪毒气, 催泪剂
🗣️ 情景例句
You look as fit as a fiddle.
你看起来非常健康。
That fellow never pays his bills on time.
那个男人从没按时付过账。
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。