Substitutor
替手, 代用品
🗣️ 情景例句
let you and I talk about it.
我们就来讨论一下。
What's the date today?
今天几号？
The hovercraft is particularly useful in large areas with poor communications such as Africa or Australia;
气垫船在非洲、澳大利亚等交通不发达地区特别有用。