海豚,dolphins,快!求How long can dolphins live?How far can a dolphin swim in a day?How fast can dolphins swim per hour?How do dolphins sleep?How long do dolphins sleep?回答,快!要准确的答案！！！！！！！！！！！！！！！！
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海豚,dolphins,快!求How long can dolphins live?How far can a dolphin swim in a day?How fast can dolphins swim per hour?How do dolphins sleep?How long do dolphins sleep?回答,快!要准确的答案！！！！！！！！！！！！！！！！
海豚,dolphins,快!求
How long can dolphins live?
How far can a dolphin swim in a day?
How fast can dolphins swim per hour?
How do dolphins sleep?
How long do dolphins sleep?
回答,快!
要准确的答案！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！
海豚,dolphins,快!求How long can dolphins live?How far can a dolphin swim in a day?How fast can dolphins swim per hour?How do dolphins sleep?How long do dolphins sleep?回答,快!要准确的答案！！！！！！！！！！！！！！！！
yes
yes
most of them can live twenty years
their speed can be 40kilometers perhour
their sleeptime is not fixed
they sleep when they are swimming
they can swim 600kilometers in the day
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most of them can live twenty years
they can swim 600kilometers in the day
their speed can be 40kilometers perhour
they sleep when they are swimming
their sleeptime is not fixed
1.三四十年
2.完全取决于它的心情
3.每小时40英里
4&5.海豚在游泳时，有时会闭上其中的一只眼睛。经调查它们的脑电波得知，它们某一边的脑部会呈现睡眠状态。即使，它们虽然持续游泳，但左右两边的脑部却在轮流休息每隔十几分钟，他们的活动状态变换一次，而且很有节奏。...
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1.三四十年
2.完全取决于它的心情
3.每小时40英里
4&5.海豚在游泳时，有时会闭上其中的一只眼睛。经调查它们的脑电波得知，它们某一边的脑部会呈现睡眠状态。即使，它们虽然持续游泳，但左右两边的脑部却在轮流休息每隔十几分钟，他们的活动状态变换一次，而且很有节奏。
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