Precalculus
a. & n.学习微积分前必修的(课程)
🗣️ 情景例句
I was just waiting for you to get home
我正等你回来，
If we had been more careful, we would be getting much better results now.
如果我们更为细心的话，成绩会更好。
The sorry-looking, blackened figure that emerged, admitted at once that he had tried to break into the shop during the night but had got stuck in the chimney.
那个看来满脸沮丧、浑身漆黑的家伙从烟囱里一出来，就承认头天夜里他企图到店里行窍，但让烟囱卡住了。