名词
中文翻译：主干道
同义词：
['main road', 'main path例句：1. The main channel of the river is lined with trees.（这条河的主要通道两旁种满了树。）']
例句：
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1. The main channel of the river is lined with trees.
这条河的主要通道两旁种满了树。
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2. The main channel of the highway was closed due to flooding.
高速公路的主干道因洪水被关闭了。
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3. Main channels are essential for the transportation system.
主干道对于交通系统至关重要。