Hypotrochoid
[机] 内转迹线
🗣️ 情景例句
They live from hand to mouth.
他们过着糊口的生活。
Fame like a river is narrowest at its source and broadest afar off.
名誉像条河，源头最狭窄，远处最宽阔。
It starts at four thirty, doesn't it?
聚会4：30开始，是吧？