名词
中文翻译：开放通道
同义词：
['open passage', 'open route', 'unobstructed channel']
例句：
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1. The river is an important open channel for transportation.
这条河流是重要的交通通道。
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2. The engineers were working on the open channel to fix the leak.
工程师们正在修理这个开放的通道以修复泄漏。
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3.The open channel allowed for easy access to the city center.
这个开放的通道便于进入市中心。