Valevene
戊烯
??? 情景例句
What did you learn at school today?
你今天在學校學了什么？
Thank you but this is something I have to do on my own.
但有些事情我必須自己做主。
All the students are expert drivers, but before they drive any of the buses, they will have to pass a special test.
所有的學生都是開車的能手，但在駕駛公共汽車之前，他們必須通過一項專門測驗。