valid

valid
adjective
  1. actually supporting the intended point or claim; acceptable as cogent
    确凿的，令人信服的
    a valid criticism.
    站得住脚的批评。
    ■legally binding due to having been executed in compliance with the law
    具有法律效力的，有法律约束力的
    a valid contract.
    具有法律效力的合同。
    ■legally acceptable
    合法有效的
    the visas are valid for thirty days.
    签证30天内有效。
派生
validity
noun
validly
adverb
语源
  1. late 16th cent.: from French valide or Latin validus 'strong', from valere 'be strong'
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