These algal blooms create beautiful patterns that can stretch for hundreds of miles and trace the ocean's swirling currents.
这些藻类在洋面幻变出奇妙的图案，绵延不绝数百英里，而且还会标示出洋流迂回波折的走向。
Do not swim in where the water is swirling around; there are dangerous currents .
不要在有漩涡的水域游泳，那里有危险的暗流。
Do not swim in where the water is swirling around; there are dangerous currents.
不要在有漩涡的水域游泳，那里有危险的暗流。
The currents swirling between tunnels and caves don't always lead back to open water.
还有涌流的漩涡在隧道和洞穴之间时常不能引导潜水者回到水的开口。
The currents swirling between tunnels and caves don't always lead back to open water.
还有涌流的漩涡在隧道和洞穴之间时常不能引导潜水者回到水的开口。
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