殚精极虑 殫精極慮
dān jīng jí lǜ
Значение
to exhaust one's thoughts and ingenuity (idiom); to think sth through thoroughly; to rack one's brains; to leave no stone unturned
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dān jīng jí lǜ
to exhaust one's thoughts and ingenuity (idiom); to think sth through thoroughly; to rack one's brains; to leave no stone unturned
Учить в приложении → Писать по чертам