Precalculus
a. & n.学习微积分前必修的(课程)
🗣️ 情景例句
It's so nice out.
外面天气真好。
Proverbs are the cream of a nation's thought.
谚语是一国的思想精华。
Last spring my wife suggested that I call in a man to look at our lawn mower.
今年春天，妻子让我请人检查一下我家的割草机。