名词
中文翻译：无效的密钥
同义词：
['invalid', "non-functioning key例句：1. The server could not validate the user's password because it was invalid.（服务器无法验证用户的密码，因为它是无效的。）2. The system requires a valid key to access the database.（系统要求一个有效的密钥才能访问数据库。）"]
例句：
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1. The server could not validate the user's password because it was invalid.
服务器无法验证用户的密码，因为它是无效的。
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2. The system requires a valid key to access the database.
系统要求一个有效的密钥才能访问数据库。
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3. The invalid key prevented the program from running successfully.
无效的密钥阻止了程序成功运行。