invalid
英[ɪn'vælɪd]
美[ɪn'vælɪd]
- adj. 无效的；有病的；残废的
- n. 病人；残废者
- vt. 使伤残；使退役
- vi. 变得病弱；因病而奉命退役
词态变化
复数: invalids;第三人称单数: invalids;过去式: invalided;过去分词: invalided;现在分词: invaliding;
助记提示
1、val- "be strong" + -id.
2、含义：strong, effective, having force in law, legally binding, supported by facts or authority.
3、in- "not" + valid.
中文词源
invalid 无效的
in-,不，非，valid,有效的。
英文词源
- 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 Hôtel des Invalides, home for old and disabled soldiers in the 7th arrondissement of Paris.
双语例句
- 1. Margaret resides with her invalid mother in a London suburb.
- 玛格丽特同她病弱的母亲住在伦敦郊区。
来自柯林斯例句
- 2. At best Nella would be an invalid; at worst she would die.
- 内拉往好里说会落下残疾，往坏处说可能会生命不保。
来自柯林斯例句
- 3. The treaty was declared invalid because it had not been ratified.
- 条约没有得到批准，因此被宣布无效。
来自《权威词典》
- 4. A passport that is out of date is invalid.
- 护照过期是无效的.
来自《简明英汉词典》
- 5. Dr. Smith looked in on the invalid the day before yesterday.
- 史密斯大夫前天去看望那个病人.
来自《简明英汉词典》