去年获胜的美国数学奥林匹克代表队的总教练罗博深说：“挑战在于，如果某些类型的人正在做某事，其他人就很难成功打入其中。”

"The challenge is if certain types of people are doing something, it's difficult for other people to break into it," said Po-Shen Loh, the head coach of last year's winning U.S. Math Olympiad team.

youdao

表示某地有某人正在做某事。

There be sb doing sth sp.

youdao

当我经过他的房门时，我听到他正在做某事。

When I passed by his door, I heard him doing STH.

youdao

看见某人正在做某事。

See sb doing STH.

youdao

是‘Iam’的缩写，它可以于其他很多单词连用来告诉对方自己的情况以及自己正在做某事。

'I'm' is an abbreviation for the word 'I AM.' it is used in combination with other words to tell someone about yourself or to describe something you are doing.

youdao

当某事发生时，某人记得他们正在做什么。

Sb remember what they were doing when STH happened.

youdao

如果某事分散了你的注意力，你将无法集中你的注意力做正在做的事情。

If something distracts you or your attention, it makes you stop concentrating on what you are doing.

youdao

注意某人(正在做)做某事。

Notice sb do \ doing STH.

youdao

注意某人(正在做)做某事。

Notice sb do \ doing STH.

youdao