Read Edit View history Discussion 研钻 yánzuān to study intensively Origin Definitions Defs Strokes Stroke Words Sentences Sents 研钻 研鑽 yánzuān to study intensively to examine or research in great depth; to delve into a subject of study Cross-References Has variant 钻研 zuānyán
研钻 研鑽 yánzuān to study intensively to examine or research in great depth; to delve into a subject of study Cross-References Has variant 钻研 zuānyán