它们的视力比人类好，而且经过训练，能够辨认出在海上的失踪者穿着的橙色救生衣。
They have better eyesight than human and have been trained to spot orange life jackets of people lost at sea.
然而栏目组通过实验发现，如果当时Rose脱下自己的救生衣，放在船板下面，二人则都有了足够的浮力漂浮在海上。
Butt the team found that if Rose had taken off her lifejacket and put it under the raft it would have given them enough buoyancy to keep both of them afloat.
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