名词
中文翻译：主干
同义词：
['main stem', 'main channel']
例句：
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1.The river has several main windings that flow through the forest.
这条河有几条主要的支流，穿过森林。
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2. Main windings of the river are lined with trees and lush vegetation.
河流的主要支流沿岸长满了树木和繁茂的植被。
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3. The main winding of the river is a popular spot for fishing.
河流的主要支流是钓鱼的好去处。