Precalculus
a. & n.学习微积分前必修的(课程)
🗣️ 情景例句
No news is good news as far as I'm concerned.
我觉得没有消息就是最好的消息。
He is on the phone.
他正在通话。
This made the driver following her brake hard.
她这一停使得跟在后头的司机也来个急刹车。