Premutation
前突变
🗣️ 情景例句
How do I find the bus stop?
我怎样才能找到车站？
The party is a good opportunity for us to meet.
这聚会是我们彼此见面的好机会。
Before long, biscuits of all shapes and sizes began arriving at the factory.
不久，形状各异，大小不一的饼干陆续送到工厂。