Where a railway crosses a navigable waterway, a bridge must be built which is capable of being opened in order to allow the river or canal traffic to pass.

在铁路穿越航道，桥梁建立必需是可以被翻开，以使河流或运河流量通过。

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Improving the navigable capability of waterway, it is necessary to study the changes of hydrodynamic condition and to predict the amount of sediment deposition in the dredged channel.

而疏深航道以提高通航能力，需要研究水域水动力变化并预测疏浚槽的回淤。

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Article 3 the operations of domestic waterway transport are classified into the coastal transport and the inland-water transport on the basis of navigable areas.

第三条国内水路运输经营按照航行区域分为沿海运输和内河运输。

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The river has been open to the public as a navigable waterway for decades, though it was encased by private land owned by timber companies and covered by hunting club leases and posted against trespassing.

WSJ: OUT THERE: Upper Hudson opening to canoeists

Though much of their three-day journey was accomplished on foot, their adventure convinced the Environmental Protection Agency to deem the waterway navigable, and thus subject to a variety of environmental regulations.

BBC: Paddling Los Angeles�� rebounding river

Three years before, environmentalist Joe Linton, George Wolfe of LA River Expeditions, and a few others had trespassed onto the then-closed river in an attempt to prove that the waterway was navigable by kayak.

BBC: Paddling Los Angeles�� rebounding river