Khn
[医][=Knoop hardness number]努普（氏）硬度值
🗣️ 情景例句
That's easy.
那太容易了。
When you're down and blue, go to a comedy.
你灰心丧气的时候，去看看喜剧。
You either starve to death or live like Robinson Crusoe, Waiting for a boat which never comes.
要么饿死，要么像鲁滨孙那样，天天盼船来，却总没见船影。