在坐下去前先检查有没有厕纸。

Check if there is a toilet paper before you sit down.

youdao

站起来七次，坐下去八次。

If you stand up seven times, sit down eight.

youdao

站起来11次，坐下去12次。

If you stand up eleven times, sit down a dozen.

youdao

Just come in and settle down, because it's very hard to lecture with this amount of traffic.

进来以后就赶紧坐下来,你们这样乱糟糟的我讲不下去

耶鲁公开课 - 基础物理课程节选