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Three groups of dolphins live close to Lantau Island. As the tide comes in, they move with it to feed on small fish or squid which travel with the currents, using echolocation to see their prey through the murky water.
有三群海豚生活在大屿山周围。涨潮时，他们随着潮水利用回声在浑浊的水中定位随水而来的猎物——小鱼和乌贼。
They also use sound to communicate. But they face a deafening problem.
他们还通过声音进行交流。但如今却面临着震耳欲聋的噪音所带来的问题。
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