youdao

She has leapt from planes and even off the top of a waterfall.

她曾从飞机上跳下，甚至从瀑布顶上跳下来。

youdao

I can't remember the name off the top of my head, but I can look it up for you.

我一时想不起这个名字，不过我可以给你查一查。

《牛津词典》

His name was Arnold Parks. He caught another worker who had fallen off the top of the canyon.

VOA: special.2010.10.27

Are there other indicators or tricks or rules of thumb that just off the top of your head come to you as useful mechanisms for doings this as well?

当然还有没有其他的,一些暗示或者说技巧,或者规则之类有用的办法呢？

哈佛公开课 - 计算机科学课程节选

Alums with Nobel prizes? Oh, I don't... I can't think of any like, off the top of my head.

获得诺贝尔奖的校友吗？这个……我一时还想不出来。

知道约翰·纳什吗？ - SpeakingMax英语口语达人

Reporters call me directly and I have to answer them off the top of my head.

FORBES: Creating And Conveying Your Media Message -Media Training

As this happened, the US began pushing Europe off the top of the economic ladder.

BBC: Eurozone crisis: What it means for East and West

Buckingham says you should skim a little off the top once your investments are profitable.

FORBES: Roll Your Own Berkshire