名词
中文翻译：地下系统
同义词：
['subterranean system', 'underground network', 'underground pipeline']
例句：
-
1. The city's underground system is designed to prevent accidents during construction.
该城市的地下系统设计用于在施工期间防止事故。
-
2. The underground system provides a reliable source of water for the entire city.
这个地下系统为整个城市提供了可靠的水源。
-
3.The underground system was built to improve traffic flow and reduce congestion.
这个地下系统是为了改善交通流和减少拥堵而建造的。