名词
中文翻译：平滑的通道
同义词：
['flowing passage', 'smooth route']
例句：
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1.The smooth passage of the river through the valley is breathtakingly beautiful.
河流在山谷中蜿蜒流淌，景色令人叹为观止。
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2.The smooth passage of time has made us all grow older.
时间的流逝让我们都变得更成熟了。
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3.The smooth passage of the meeting was smooth and uneventful.
会议进展顺利，没有发生任何意外事件。