Quadricovalent
四配价的
🗣️ 情景例句
I'm his friend.
我是他的朋友。
In face, I am still not sure if I really deserve this honor.
事实上，我还是不敢确信我是否真的堪当这个奖赏。
What are you doing? he asked.
“你在做什么？”他问道。