Ocean channel is such a complex environment that it varies in space, time and frequency.

海洋水声信道是一种极其复杂多变的时-空-频变参信道。

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Experienced swimmers know it is relatively easy to escape the narrow channel of the fast moving water by floating and allowing it to drag you further into the ocean or by swimming alongside the shore.

有经验的游泳者都知道，要想从湍急的水流中逃离狭窄的水道相对来说比较容易，方法是让水漂浮起来，让它把你进一步拖入大海，或者沿着海岸游泳。

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Sediment colors the water flowing through that channel a lighter color than the surrounding ocean.

河流沉积物使海峡内水的颜色较之周围海水要浅一些。

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Now, the whales migrate through a channel of ocean that's heavily trafficked by cargo and fishing ships, earning the species a new nickname: the urban whale.

CNN: Endangered right whales appear to be on the rebound

The storm cut a channel between the ocean and Barnegat Bay, severing the town in two before repairs filled the breach.

WSJ: Dunes vs. property rights in storm-battered NJ

Two researchers (separated by the Atlantic ocean, rather than the English Channel), have used gravitational perturbations that affect comets, rather than planets, to predict the existence of something that might be a planet, or might be a star depending mainly on how you define a planet or a star.

ECONOMIST: X marks the spot