Quadravalence
四价
🗣️ 情景例句
Right. Would you give me room service, please?
好。请接房间服务部好吗？
No, I'm sorry, sir. We don't accept checks.
先生，对不起，我们不接受支票。
Let's get together for lunch.
让我们一起吃顿午餐吧。