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词汇 valid
词根词缀 词源:
1570s, "having force in law, legally binding," from M.Fr. valide, from L. validus "strong, effective," from valere "be strong" (see valiant). The meaning "supported by facts or authority" is first recorded 1640s.
词根记忆:
a.
有效的;有根据的;正当的This license is no longer valid.这张执照不再有效.
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更新时间:2025/4/11 6:58:35