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彼かれは度たび重かさなる病びょう気きをものともせず、十じゅう年ねんをかけて研けん究きゅうを完かん成せいさせた。

Span Details

度たび重かさなる

occur repeatedly; be repeated; be frequent

godan verb

病びょう気き

illness; disease; sickness

noun, no-adjective

ものともせず、

undaunted by; in defiance of; ignoring

十じゅう年ねん

ten years; decade

spend; expend; use up

-> かけるichidan verb, suffix

connective te-form

研けん究きゅう

research; study; investigation

noun, suru verb

完かん成せい

completion; perfection; accomplishment

noun, suru verb

make someone do; let someone do; causative; allow to do; let do; permissive; honorific auxiliary; respectful expression for others' actions

-> せるauxiliary verb, auxiliary