Hypocycloidal
内圆滚线
🗣️ 情景例句
You are going to miss her!
你会想念她的！
Fear is often greater than the danger.
杞人忧天。
Before we had time to worry about what might happen, we were back on the plain again.
我们还未来得及担心后果，车已重新开上了平地。