Polydentate
多配位基的
🗣️ 情景例句
Tell me about your educational background.
告诉我你的学习背景。
I asked him to clean it for me, but he wouldn't.
我请他帮我清理，但是他不肯。
I'd like to do some shopping, but not during the day.
我愿意买些东西，但不必白天去。