in·op·er·a·tive
adjective/ɪnˈɒpərətɪv/
/ɪnˈɑːpərətɪv/
(formal)- (of a rule, system, etc.) that cannot be used because it is not legally or officially acceptable
无效的；不能实行的 - Your insurance policy will become inoperative if your circumstances change.
如果你的情况改变，你的保险单将无效。
- Your insurance policy will become inoperative if your circumstances change.
- (of a machine) not working; not functioning correctly
不运转的；运行不正常的