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A portage: as between two navigable bodies of water.
水陆联运：两条通航的水路之间的联运。
youdao
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The deeper part of a river or harbor, especially a deep navigable passage.
河流或港湾较深部分，尤指深水航道。
youdao
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The deeper part of a river or harbor, especially a deep navigable passage.
河流或港湾较深部分，尤指深水航道。
youdao