名词
中文翻译：主干部分
同义词：
['main body', 'main part例句：1. The main line section of the road is blocked due to construction.（由于施工，道路的主干部分被封锁了。）']
例句：
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1. The main line section of the road is blocked due to construction.
由于施工，道路的主干部分被封锁了。
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2.The main line section of the railway was damaged in the accident.
铁路的主干部分在事故中受损。
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3.The main line section of the bridge is designed for high-speed traffic.
这座桥的主干部分是为高速交通设计的。