I stood up and argued about silly things, in a high voice and with violent hand movements.

VOA: special.2009.05.16

Somebody with a hand up, so I can see it.

有人举手了，我看到了。

麻省理工公开课 - 计算机科学及编程导论课程节选

People have referred to this as a J shaped curve with this little up tick in the left hand side and people--some people have sort of said, well maybe it's not so bad to be overweight because it's not so good to be underweight as well and that's a problem.

人们把这称为J形曲线,最左边有一个向上的弯钩,因此就有人说,也许超重也不一定就是一件坏事,因为体重过轻也不是什么好事,这是个问题

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选