zài / zhè / me / duō / fèn / dàng / àn / lǐ / zhǎo / yì / zhāng / jiù / piào / jù / jiǎn / zhí / shì / dà / hǎi / lāo / zhēn

在这么多份档案里找一张旧票据，简直是大海捞针。

Looking for one old receipt among so many files is like finding a needle in a haystack.