/ snuːp / verb informal disapproving
to look around a place secretly, in order to discover things or find out information about someone or something:
People were sent out to snoop on rival businesses. 派出了人员去打探竞争对手的情况。
snoop

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/ snuːp / verb informal disapproving
to try to find out about other people's private lives:
I don't mean to snoop, but is there something wrong? 我不是想打探你的私生活,不过是不是出了什么事?

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/ noʊz / verb informal
to look around or search in order to discover something, especially something that other people do not want you to find:
There were some reporters nosing about/around. 有些记者在四处打探新闻。
spy on sb/sth C2 phrase
to watch someone or something secretly, often in order to discover information about him, her, or it:
He was spying on her through the keyhole. 他从锁孔里窥探着她。
snoop

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/ snuːp / noun informal disapproving
someone who snoops:
He's such a snoop - he's always going through my mail. 他真是窥探成癖——总是偷看我的信件。

(Translation of 窥探 from the Cambridge Chinese (Simplified)-English Dictionary © Cambridge University Press)