名词
中文翻译：用户密钥
同义词：
['user key', 'user password']
例句：
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1. To access the system, youneed to enter your user key.
要访问系统，你需要输入你的用户密钥。
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2. Theuser key is required for logging in tothe system.
登录系统需要用户密钥。
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3. Theuser key was lost and we had toreset the password.
用户密钥丢失了，我们不得不重置密码。