actually supporting the intended point or claim; acceptable as cogent
确凿的,令人信服的
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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
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a valid contract. 具有法律效力的合同。
legally acceptable
合法有效的
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the visas are valid for thirty days. 签证30天内有效。
"late 16th cent.: from French