invalid
英 [?n'v?l?d]
美[?n'v?l?d]
- adj. 無效的；有病的；殘廢的
- n. 病人；殘廢者
- vt. 使傷殘；使退役
- vi. 變得病弱；因病而奉命退役
TEM4IELTSCET6低頻詞考研常用詞匯
詞態(tài)變化
復數(shù):?invalids;第三人稱單數(shù):?invalids;過去式:?invalided;過去分詞:?invalided;現(xiàn)在分詞:?invaliding;
助記提示
1、val- "be strong" + -id.
2、含義：strong, effective, having force in law, legally binding, supported by facts or authority.
3、in- "not" + valid.
2、含義：strong, effective, having force in law, legally binding, supported by facts or authority.
3、in- "not" + valid.
中文詞源
invalid 無效的
in-,不，非，valid,有效的。
英文詞源
- invalid
- invalid: see valid
- invalid (adj.1)
- "not strong, infirm," 1640s, from Latin invalidus "not strong, infirm, weak, feeble," from in- "not" (see in- (1)) + validus "strong" (see valid). Specific meaning "infirm from sickness, disease, or injury" is from 1640s.
- invalid (adj.2)
- "of no legal force," 1630s, from special use of Latin invalidus (see invalid (adj.1)).
- invalid (n.)
- 1709, originally of disabled military men, from invalid (adj.1). Invalides is short for French H?tel des Invalides, home for old and disabled soldiers in the 7th arrondissement of Paris.
雙語例句
- 1. Margaret resides with her invalid mother in a London suburb.
- 瑪格麗特同她病弱的母親住在倫敦郊區(qū)。
來自柯林斯例句
- 2. At best Nella would be an invalid; at worst she would die.
- 內(nèi)拉往好里說會落下殘疾，往壞處說可能會生命不保。
來自柯林斯例句
- 3. The treaty was declared invalid because it had not been ratified.
- 條約沒有得到批準，因此被宣布無效。
來自《權(quán)威詞典》
- 4. A passport that is out of date is invalid.
- 護照過期是無效的.
來自《簡明英漢詞典》
- 5. Dr. Smith looked in on the invalid the day before yesterday.
- 史密斯大夫前天去看望那個病人.
來自《簡明英漢詞典》