名词
中文翻译：时间证明书
同义词：
['certificate of time served', 'proof of service certificate']
例句：
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1.He received a time certificate for completing the project on time.
他因按时完成项目而获得了时间证明书。
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2. The company issued a time certificate to its employees for their outstanding performance.
公司为员工的杰出表现颁发了时间证明书。
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3. The police issued a time certificate to the victim's family as they waited for the suspect to be arrested.
警方向受害者家属颁发了时间证明书，因为他们在等待嫌疑人被捕。