valid
adjective
Definitions of valid adjective
- B2
based on sound reasoning or truth; acceptable
有效的；有根據的；合理的
a compelling argument/critique/justification
一個有說服力的論點/批判/辯解
The research used a sound and valid methodology.
這項研究採用了可靠且有效的方法論。
Their concerns are genuine and valid.
他們的擔憂是真實且合理的。
- B2
officially acceptable or recognized, often within a specific time limit or set of conditions; legally binding
（票券或其他文件）有效的；正式認可的
Your membership card is valid until the end of this year.
您的會員卡有效期至今年年底。
Please make sure your visa remains valid during your travels.
請確保您的簽證在旅行期間保持有效。
This coupon is only valid within the specified date range.
此優惠券僅在指定日期範圍內有效。
legally binding and enforceable
有效的；合法的
The agreement became valid once they signed the contract.
一旦他們簽署了合同，協議就具有法律效力。
The lawyer is checking the validity of the document.
律師正在檢查文件的有效性。
For this will to be valid, it must be signed by two witnesses.
這份遺囑要具有法律效力，必須由兩位證人簽署。