Khn
[医][=Knoop hardness number]努普（氏）硬度值
🗣️ 情景例句
I just solved the mystery.
我刚刚把那个谜底解开了。
In the grave the rich and poor lie equal.
人到黄泉，贫富同眠。
He knew it would not prove difficult in such a small village.
他知道在这样一个小村庄里抓住小偷并不困难。