HSK2

at

Senses

/ 於 in

preposition, verb, place word, noun, expression, adjective, idiom, measure word · expressing location or time (in, at, on)

他出生于一九九零年。

/ 於 to

preposition, verb, idiom, punctuation, noun, expression, pronoun · indicating a target, direction, or relation (to, toward, vis-à-vis, for)

他忠于自己的职守。

/ 於 than

verb, preposition, noun, expression, conjunction · used in comparison to indicate degree

质量优于数量。

/ 於 by

preposition, adjective, verb · used in the passive voice to introduce the agent

受制于人。

Yu

proper name · surname Yu

于先生是位著名的科学家。

go

proper name · to go to or travel to

王于兴师,修我戈矛。

question particle

conjunction, proper name · sentence-final interrogative particle

谁之永号?于?

References

variant 于/于 于/於
old_variant 亐/亐 于/于