Epitrochoid
[机] 外转轴线
🗣️ 情景例句
But my birthday is tomorrow.
但是我的生日就在明天。
How long have you had this pain?
疼痛多久了？
My shoe has been pressing against my foot, so it hurts a bit.
我的鞋一直挤着脚，所以脚有点疼。