a hard egg to crack

A person, thing, situation, or problem that is particularly difficult to understand, solve, or deal with. I've been dating Jenny for over a year, and I still think she's a hard egg to crack! Figuring out the best way to modernize our product without alienating existing customers is definitely a hard egg to crack. The spy we captured is a hard egg to crack—he hasn't said a thing since we began the interrogation.

词组	a hard egg to crack
释义	a hard egg to crack a hard egg to crack A person, thing, situation, or problem that is particularly difficult to understand, solve, or deal with. I've been dating Jenny for over a year, and I still think she's a hard egg to crack! Figuring out the best way to modernize our product without alienating existing customers is definitely a hard egg to crack. The spy we captured is a hard egg to crack—he hasn't said a thing since we began the interrogation. See also: crack, egg, hard Farlex Dictionary of Idioms. See also: a hard nut (to crack) a hard/tough nut a tough nut hard nut to crack bit of rough a bit of rough a mother hen in years make a note of make a note of (something)
随便看	IOU IOU1 IOW I owe you one IP IPML in park in part in particular in passing in pawn in pencil in perpetuity in person in perspective in petto in phase in phase/out of phase in phase (with someone or something) in place in place of in place of somebody/something in place of (someone or something) in place of (something) in plain English