Precalculus
a. & n.学习微积分前必修的(课程)
🗣️ 情景例句
Susan and Harry have a sitter for Michelle in the city,
Susan和Harry在城里给Michelle找到一位临时保姆，
Pervert!
色狼！
The greatness of Venice will soon be lost.
威尼斯不久就会丧失它的伟大。