于 yúYú HSK2 at Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: Yu All meanings 391 yú 389 in 240to 133than 10by 4go 1question particle 1Yú 2 Yu 2 2 sentences for 于 (Yú — Yu) 于先生是位著名的科学家。 Yú xiānsheng shì wèi zhùmíng de kēxuéjiā. Mr. Yu is a famous scientist. Source: Dong Chinese Dictionary于教授是物理学方面的权威专家。 Yú jiàoshòu shì wùlǐxué fāngmiàn de quánwēi zhuānjiā. Professor Yu is an authoritative expert in the field of physics. Source: Dong Chinese Dictionary