Driven by the wind and tides, these familiar waves ride across the top of the ocean.

受风和潮汐驱动，这些熟悉的波浪越过海洋表面。

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Wind-driven swells slapped over the tops of breakwaters and turned waves into a churning froth under piers at points such as Redondo Beach and Manhattan Beach on the Los Angeles County coast.

NPR: Windy Spring Storm Sweeps Through Calif., Arizona