valid

• adj. 有效的；有根據的；合法的；正當的

來自拉丁語valere, 強健的，勇敢的，詞源同value，引申詞義有效的。

valid

valid: [16] Something that is valid is etymologically ‘strong’, and hence ‘effective’. The word comes via French valide from Latin validus ‘strong, effective’, which was derived from the verb valēre ‘be strong’ (source also of English valiant, valour, value, etc). The negative form invalid [16] also goes back to Latin, but its specific application to infirm people, differentiated with a distinct pronunciation, was introduced from French in the 17th century.
=> valiant, valour, value

valid (adj.)

1570s, "having force in law, legally binding," from Middle French valide (16c.), from Latin validus "strong, effective, powerful, active," from valere "be strong" (see valiant). The meaning "sufficiently supported by facts or authority, well-grounded" is first recorded 1640s.

1. For foreign holidays you will need a valid passport.

出國度假需持有效護照。

來自柯林斯例句

2. He recognized the valid points that both sides were making.

他認可雙方觀點中的合理之處。

來自柯林斯例句

3. All tickets are valid for two months.

所有的票在兩個月內有效。

來自柯林斯例句

4. He did not accept this reply as valid.

他認為這個回答沒有根據。

來自柯林斯例句

5. a bus pass valid for 1 month

公共汽車月票

來自《權威詞典》