invalid 的意思
invalid 的翻译
invalid
[inˈvælid]
释义：
adj. 无效的；（论据、结论）站不住脚的
例句：
A passport that is out of date is invalid.
护照过期是无效的.
换一句
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.
换一句
The disease changed him from an athlete to an invalid.
疾病将他从一名运动员变为病号.
换一句