It's like trying to find a needle in a haystack.

It was like looking for a needle in a haystack.

如同海底劳针.

To look for a needle in a haystack.

草垛里找针(大海捞针).

Looking for them now is like fishing for a needle in a haystack!

这回要在庄稼地里搜捕,那不是海底捞针!

They traveled under the protection of a number of soldiers.

他们在一些士兵的护卫下旅行.

He has left a number of books with me.

他把好些书存放在我这儿了.

He masterminded a number of terrorist attacks.

他谋划了许多次恐怖袭击行动.

I visited a number of scientific institutes in Asia.

我访问了亚洲的许多科学协会.

Yesterday it was reported that a number of people had been arrested in the capital.

昨天据报道有很多人在首都被捕。

I learned that a number of statements in my talk were factually wrong.

我得知我谈话中的一些说法与事实有出入。

It may take a number of attempts, but it is worth keeping at it.

可能要试几次，但还是值得坚持的。

There have been a number of clashes between police in riot gear and demonstrators.

防暴警察和示威人群已发生多起冲突。

After a number of mishaps she did manage to get back to Germany.

经历了一番波折之后，她终于设法返回德国。

Mr Davis has been asked on a number of occasions.

戴维斯先生曾多次被问及。

A number of buildings around the Parliament were still smouldering today.

国会周围的一些大楼今天还在冒烟。

There have been a number of explanations, but none of them stack up.

已经提出了好几种解释，但没有一种能站得住脚。

It will lead to devaluation of a number of European currencies.

这将会造成数种欧洲货币的贬值。

She is known in Italy for a number of minor roles in films.

她因在电影中饰演了一些配角而在意大利为人所知。

Asmus became friendly with a number of writers and appeared in print as a literary critic.

阿斯穆斯和许多作家成为了好友，而且还作为一名文学评论家出现在报纸上。

His letter poses a number of puzzling questions.

他的信中提出了许多令人困惑的问题。

In her haste to complete the work on time, she made a number of mistakes.

她急急忙忙想按时完工，结果出了不少错。