Definition
这是一条成语，字面意思是‘没有孔洞不钻进去’，比喻一个人善于利用一切机会钻营、插手，通常带贬义。常用于形容商业渗透、宣传攻势或不良行为等。不要按字面意思理解成物理上的钻进。
f.e.
(idiom, derogatory) to seize every opportunityto be omnipresent (especially in negative contexts)
Examples
- 无孔不入，App。Zhè zhǒng guǎnggào zhēn shì mó, lián shǒujī App shàng dōu néng kàn dào.This kind of advertisement is really everywhere—even on mobile apps.
- 无孔不入，。Jiàndié huódòng mó, rènhé bùmén dōu yào jǐngtì.Spy activities infiltrate every opening; every department must be vigilant.
- 无孔不入，。Zhè zhǒng fǔbài xíngwéi mó, bìxū yánlì dǎjí.This kind of corrupt behavior seizes every opportunity; it must be severely cracked down on.
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