名词
中文翻译：下线
同义词：
['downstream', 'downstream', 'downstream line例句：1. The engineer down lines the pipeline to inspect for leaks.（工程师检查管道以检测泄漏。）']
例句：
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1. The engineer down lines the pipeline to inspect for leaks.
工程师检查管道以检测泄漏。
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2. The company has a down line of over 50 employees.
该公司拥有超过50名员工。
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3.Down lines are often used in agriculture to control pests.
在农业中，下线常用于控制害虫。