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a [wh-word+to do, wh-clause, that-clause などを伴って] 〔…で〕知る, わかる (make out) 〔by, from🔗🔉

a [wh-word+to do, wh-clause, that-clause などを伴って] 〔…で〕知る, わかる (make out) 〔by, from〕 (cf. vi. 2).

研究社新英和大辞典 ページ 227777 でのa [wh-word+to do, wh-clause, that-clause などを伴って] 知る, わかる 〔by, from単語。