名词
中文翻译：Unknown
同义词：
['unconfined flow', 'unrestricted flow', 'unimpeded flow']
例句：
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1.The free-stream flow of the riveris refreshing to the eye.
河流的自由流动令人眼目一新。
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2. Thefree-stream flow ofthe river is essential for thegrowth of the plants.
河流的自由流动对植物的生长至关重要。
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3. The free-streamflow of the river is a natural wonderthat attracts tourists from all over theworld.
河流的自由流动是一个自然奇观，吸引了来自世界各地的游客。