Precalculus
a. & n.学习微积分前必修的(课程)
🗣️ 情景例句
Then why are you and Daddy
那为什么你和爸爸
My sister worked as a secretary before she got married.
在她结婚了以前，我的姐姐为一位秘书。
The fact of first-rate importance is the predominant role that custom plays in experience and in belief, and the very great varieties it may manifest.
最重要的是，风俗在实践中和信仰上所起的举足轻重的作用，以及它所表现出来的极其丰富多采的形式。