最終更新日:2022/12/07
正解を見る
(transitive, idiomatic) To improve. / (transitive) To shine; to make shiny. / (intransitive, idiomatic) To become more muscular. / (intransitive, idiomatic) To study hard to learn a particular subject.
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元となった辞書の項目
buff up
verb
意味(1)