天差地遠

poles apart (idiom) / entirely different

day / sky / heaven

difference; discrepancy / (math.) difference (amount remaining after a subtraction) / (literary) a little; somewhat; slightly

different / wrong; mistaken / to fall short; to lack / not up to standard; inferior / Taiwan pr. [cha1]

to send (on an errand) / (archaic) person sent on such an errand / job; official post

used in 參差|参差[cen1 ci1]

-ly / structural particle: used before a verb or adjective, linking it to preceding modifying adverbial adjunct

earth / ground / field / place / land / CL:片[pian4]

far / distant / remote / (intensifier in a comparison) by far / much (lower etc)

to distance oneself from (classical)