valid
🇺🇸
/ˈvælɪd/
🇬🇧
/ˈvælɪd/
legally or officially acceptable
Your passport must be valid for travel.
您的護照必須在旅行期間有效。
logical and true
His argument was valid and well-supported.
他的論點有效且有充分支持。
accepted by the system
Enter a valid username and password to log in.
輸入有效的使用者名稱和密碼以登入。