Knu
abbr. knuckle 关节，钩爪
🗣️ 情景例句
A young male may be addressed as 'young man'.
一个年轻的男性可以被称作 'young man' 。
I dialed the right number,but nobody answered.
我拨了正确的号码，但是任何人接。
while our own compulsory school attendance became law in Germany in 1642,
而我们的义务教育成为法律在德国是在1642年，