1
valid for sth
The coupon is valid for one year.
这张优惠券有效期为一年。
有效的；合法的；符合规定的
先理解核心含义，再看它在真实句子里的用法。
有效的；合法的；符合规定的
legally or officially acceptable
The coupon is valid for one year.
这张优惠券有效期为一年。
指票证、合同、法律文件等在法律或规定上仍然有效。
有充分根据的；合理的；相关的。
Well-grounded or justifiable, pertinent.
逻辑或事实依据充分的；或具有法律效力的
well grounded in logic or truth or having legal force
可接受的；恰当的；正确的；符合规则的。
Acceptable, proper or correct; in accordance with the rules.
仍具法律效力的
still legally acceptable
You need a valid passport to travel abroad.
出国旅行需要有效护照。
AI contextual example
She gave a valid reason for being late.
她为迟到给出了合理的理由。
AI contextual example
This train ticket is valid for one day only.
这张火车票仅当天有效。
AI contextual example
a valid inference
一个有效的推论。
WordNet
The coupon is valid for one year.
这张优惠券有效期为一年。
This passport is valid until 2030.
这本护照有效期至2030年。
It is valid to argue that the policy is flawed.
有理由认为该政策存在缺陷。
Not this
This method is very valid for solving the problem.
Use this
This method is very effective for solving the problem.
混淆了“valid”（合乎逻辑或规定）与“effective”（达成预期效果）的用法。
Not this
The valid of my passport is one year.
Use this
The validity of my passport is one year.
错误地将形容词“valid”当作名词使用，应使用名词形式“validity”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
有根据的论点
She presented a valid argument.
她提出了一个合理的论点。
有道理的观点
That's a valid point.
那是个有道理的观点。
正当的理由
He had no valid reason to be late.
他没有正当的理由迟到。
有效护照
Make sure your passport is valid.
确保你的护照是有效的。
有效执照
You need a valid license to drive.
你需要有效的驾照才能开车。
有效合同
The contract is no longer valid.
合同不再有效。
Use valid naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想“V”形胜利手势，胜利需要有效（valid）的策略，valid即“有效”。
多用于逻辑推理或法律语境，中性至正式程度。
Words ending in -id: 'invalid' and 'pallid' rhyme exactly with 'valid' (same stressed vowel /æ/ + /lɪd/). Others like 'avid', 'acid', 'rapid', 'splendid' share the -id ending but differ in stressed vowel or following consonant, so they do not rhyme.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.