Pigginstring
[美]绑脚绳
🗣️ 情景例句
He's running for the school board.
他正在竞选联合校董会董事。
It's time for class.
上课时间到了。
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？