毕其功于一役

to accomplish the whole task at one stroke (idiom)

surname Bi

the whole of / to finish / to complete / complete / full / finished

his / her / its / their / that / such / it (refers to sth preceding it)

meritorious deed or service / achievement / result / service / accomplishment / work (physics)

to go / to take / sentence-final interrogative particle / variant of 於|于[yu2]

(of time or place) in; at; on / (indicating any indirect relation) to; toward; vis-à-vis; with regard to; for / (indicating a source) from; out of / (used in comparison) than / (used in the passive voice) by

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

forced labor / corvée / obligatory task / military service / to use as servant / to enserf / servant (old) / war / campaign / battle