臻于完善

to attain perfection (idiom)

to arrive / to reach (esp. perfection) / utmost / (used in commercials)

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

to finish / to be over / whole / complete / entire

(of systems, facilities etc) comprehensive / well-developed / excellent / to refine / to improve

good (virtuous) / benevolent / well-disposed / good at sth / to improve or perfect