杀手级应用

killer application / killer app

to kill / to murder / to attack / to weaken or reduce / to smart (dialect) / (used after a verb) extremely

killer / murderer / hit man / (sports) formidable player

hand / (formal) to hold / person engaged in certain types of work / person skilled in certain types of work / personal(ly) / convenient / classifier for skill / CL:雙|双[shuang1],隻|只[zhi1]

level / grade / rank / step (of stairs) / CL:個|个[ge4] / classifier: step, level

surname Ying / Taiwan pr. [Ying4]

to agree (to do sth) / should / ought to / must / (legal) shall

to answer / to respond / to comply with / to deal or cope with

to put to use / to apply / practical / applied (science, linguistics etc) / application / practical use / (computing) app

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