38号码头是一个巨大的类似飞机棚的构造，它位于旧金山的海岸。
PIER 38 is a vast, hangar-like structure, perched on San Francisco's waterfront.
智利的大多数海岸线都位于纳斯卡版块和南美洲构造版块交界面之上。
Much of the Chilean coastline is located above the boundary between the converging Nazca and South American tectonic plates.
专家并不能确定下次地震将在何时、何地发生，但西海岸地区由于相同的地理构造、发生地震的风险增高。
Experts can't be certain where or when the next earthquake will be but the West Coast risk has increased because it is in the same volatile geological system.
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