名词
中文翻译：线涡
同义词：
['line vortex', 'line twister']
例句：
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1.The line vortex is a common feature of many rivers and streams.
线涡是许多河流和溪流的常见特征。
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2.The line vortex is responsible for the rotation of the water column.
线涡负责水柱的旋转。
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3. The line vortex can be used to study the dynamics of fluid flow.
线涡可以用来研究流体流动的动力学。