Precalculus
a. & n.学习微积分前必修的(课程)
🗣️ 情景例句
They shared the first harvest with the Indians
他们与印第安人分享首次收成
Did you wash this yourself?
你自己亲自洗了这个？
Hello, Wei Hua! Nice to meet you.
魏华，见到你也很高兴！