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》

That's like looking for a needle in a haystack.

这就像大海捞针。

youdao

I think it's lost forever because those mountains are so vast and inaccessible that you're looking for a needle in a haystack.

我认为它永远消失了，因为这些山脉是如此巨大艰险，你无疑是在大海捞针。

youdao

In countries like Britain, which have a large population of asylum-seekers and illegal immigrants, seeking out militants can be like looking for a needle in a haystack.

ECONOMIST: The enemy within | The

"It's like looking for a needle in a haystack, " Miami-Dade Fire Rescue spokesman Lt.

CNN: Family safe after Everglades adventure