Electiveness
选修制
🗣️ 情景例句
It's true. You are in great shape.
这是真的。你的身体很好。
Are these books all yours?
这些书全是你的吗？
The most unusual car was a Benz which had only three wheels.
而最不寻常的一辆则要属只有3只轮子的奔驰牌汽车了。