名词
中文翻译：次要服务区
同义词：
['subordinate service area', 'secondary area', 'secondary zone']
例句：
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1. Thecity's transportation system is designed toefficiently serve the primary and secondary service areas.
该城市的交通系统旨在高效地服务于主要和次要服务区域。
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2. The newairport will provide direct flightsto both the primary and secondaryservice areas.
新机场将提供直达至主要和次要服务区域的航班。
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3. The governmenthas proposed a plan to improve the connectivitybetween the primary and secondary service areas.
政府提出了一个计划，以改善主要和次要服务区域之间的连通性。