名词
中文翻译：流动号码
同义词：
['moving number', 'rolling number']
例句：
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1.The company's new policy requires all employees to have a running number.
该公司的新政策要求所有员工都有流动号码。
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2. The bank has been using this system for years, and now it's time for a new running number.
银行已经使用这个系统多年了，现在是时候更换新的流动号码了。
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3.The government is introducing a new system to track the running numbers of vehicles.
政府正在引入一个新的系统来追踪车辆的流动号码。