Khn
[医][=Knoop hardness number]努普（氏）硬度值
🗣️ 情景例句
I'd just like to repeat, do not be late!
我只想重复一遍，别迟到！
It's not four o'clock.
还没到四点呢。
We welcome the seasons by the riverside,
我们在河边迎接一年四季。