Khn
[医][=Knoop hardness number]努普（氏）硬度值
🗣️ 情景例句
Ah. OK. That's a dollar and thirty cents change.
啊 ，好啦。这是一美元三毛零钱。
Out of sitght, out of mind.
眼不见，心不想。
If a citizen's complaint is justified, the Ombudsman will act on his behalf.
如果公民的意见正确，司法特派员便为他伸张正义。