Molarization
成臼齿作用
🗣️ 情景例句
If you know a man's last name, address him as 'Mr.'.
如果你知道一个男性的姓， 应该用 'Mr。' 来称呼他。
That's enough!
真是够了！
Train compartments soon get cramped and stuffy.
车厢很快就变得拥挤、闷热，