Epitrochoid
[机] 外转轴线
🗣️ 情景例句
Mom, got it.
妈妈， 找到了。
No, I only wrote her one letter this year.
是的，今年我才给她写过一封信。
The men got such a fright that they dropped the bag and ran away.
这两个人吓了一跳，扔下提包逃跑了。