Nddo
[化] 忽略雙原子微分重疊法
??? 情景例句
I'm going to the library to do some research.
我要去圖書館搞些調研。
He learns French every day.
他每天都學法語。
Yes, it is. You need to wear warmer clothes.
是啊，你應該穿得更暖和些。