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to peep / to pry into

cave / cavity / hole / acupuncture point / Taiwan pr. [xue4]

compass / a rule / regulation / to admonish / to plan / to scheme

to peep / to peek / to act as voyeur

to pry into or spy on / to snoop / to peep / to poke one's nose into / to peer / to get a glimpse of

to peep at / to spy on / to peek

endoscope

to peep / to spy on

lit. to see a leopard through a narrow tube (idiom); fig. to miss the big picture

to spy upon / to lie in wait for (an opportunity)

in my humble opinion

to peep at

to infer easily / to guess at a glance / to get a clue

voyeur / peeping tom

lit. not even peek at the garden / fig. to be absorbed in one's studies (idiom)

to find out about / to discover

lit. to see one spot on a leopard / fig. a restricted view

lit. see one spot on a leopard (idiom); fig. a restricted view

to look at sth through a bamboo tube / to have a restricted view