Derigueur
礼貌习惯上所必需的, 合乎礼仪的
🗣️ 情景例句
Are they always that difficult to make?
领结这样难打吗？
He spends a lot of time reading books on ecology.
他花了大量的时间阅读生态学方面的书籍。
I'm OK. Sam, what are you going to do tomorrow?
我也很好。山姆，你打算明天做什么？