最終更新日：2024/06/26
become blunt / decline in ability or energy, lose one's edge / lose skill, decline in competence, get rusty
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verb
become blunt / decline in ability or energy, lose one's edge / lose skill, decline in competence, get rusty
意味（1）
become blunt
意味（2）
decline in ability or energy, lose one's edge
意味（3）
lose skill, decline in competence, get rusty
