Searching for one man in this city is like looking for a needle in a haystack.

在这个城市里找一个人无异于大海捞针。

《牛津词典》

Searching for one man in this big city is like looking for a needle in a haystack.

在这座大城市里寻找一个人犹如大海捞针。

youdao

Searching for one in this big city is like looking for a needle in a haystack.

在这座大城市里寻找一个人犹如大海劳针。

youdao

This method of testing new drug ideas against many thousand compounds - High Throughput Screening (HTS) - is likened to searching for a very small needle in a very large haystack.

BBC: Science of life in the economy

In manufacturing, there is not always a universal naming and numbering system and so part sourcing on the web can often be like searching for the proverbial needle in a haystack. 3D search transforms this experience.

FORBES: London-Based Startup 3D Industri.es Aims To Become The Google Of 3D Search