名词
中文翻译：下游部分
同义词：
['downriver section', 'downstream segment']
例句：
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1.The engineer designed the new bridge to be more efficient in reducing traffic congestion downstream.
工程师设计了新桥，以在下游更有效地减少交通拥堵。
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2. During the construction of the tunnel, we had to carefully plan the downsteam section to ensure safety.
在隧道建设期间，我们必须仔细规划下游段以确保安全。
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3. The company has been working on developing a new downsteam section for its vehicles to improve fuel efficiency.
该公司一直在开发一种新的下游段，以提高其车辆的燃油效率。