尽心

with all of one's heart

to the greatest extent / (when used before a noun of location) furthest or extreme / to be within the limits of / to give priority to

to use up / to exhaust / to end / to finish / to the utmost / exhausted / finished / to the limit (of sth) / all / entirely

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

making an all-out effort (idiom); to try one's heart out / to do one's utmost

to rack one's brains for schemes (idiom) / to beat one's brains out

to spare no effort (idiom); to do one's utmost

to tax one's ingenuity

to experience one's full share of sorrows (idiom)

to rack one's brains (idiom); to take great pains to think sth through