Peritrochoid
外摆线圆
🗣️ 情景例句
It's tough getting an O.K. from the boss.
很难从老板那听到声“同意”。
I hope this will teach you a lesson.
希望这会给你一个教训。
Anything else you want to bring up for discussion.
你还有什么问题要提出来供双方讨论的吗？