Quadratrix
割圆曲线
🗣️ 情景例句
Yeah. My new advanced exercise class.
对， 新的高级健身班。
I can't do two things at the same time.
我只有一双手。
Since that time, various types of hovercraft have appeared and taken up regular service.
从那以后，各种各样的气垫船出现了，并开始了定期航行服务。