Cepa
[化] 耦合电子对近似
🗣️ 情景例句
After forty-eight hours.
四十八小时后。
It's faster to go by plane than by boat.
和坐船比，坐飞机是更快的。
In despair, I asked her whether she was enjoying her dinner.
失望之中我问她饭是否吃得满意。