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Sentence

彼かれは粘ねばり強づよく改かい善ぜんに努つとめた。

Span Details

粘ねばり強づよく

tenacious; persevering; persistent

-> 粘り強いi-adjective

改かい善ぜん

improvement; betterment

noun, suru verb

direction, time, indirect object, or target marker

endeavor; strive; make an effort

-> 努めるichidan verb

past tense or completed action