一心多用

to multitask

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

wholeheartedly / heart and soul

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

many; much / too many; in excess / (after a numeral) ... odd / how (to what extent) (Taiwan pr. [duo2]) / (bound form) multi-; poly-

multipurpose / having several uses

to use / to employ / to have to / to eat or drink / expense or outlay / usefulness / hence / therefore