求翻译：海豚是在水面换气的海洋动物，每一次换气可在水下维持二三十分钟，当人们在海上看到海豚从水面上跃出时，这是海豚在换气。同时，海豚的栖息地多为浅海，很少游入深海。它们会在不同的地方进行不同的活动，休息或游玩时，会聚集在靠近沙滩的海湾，捕食时则出现在浅水及多岩石的地方。是什么意思？

Dolphins are marine animals, ventilation in the water every time ventilation to maintain twenty or thirty minutes in the water, when the people saw dolphins leaping from the water at sea, the dolphins in the ventilation. The same time, the habitat of the dolphins are mostly shallow water, rarely swi

Dolphins are marine animals on the water's surface, ventilation in every ventilator can be maintained at sea 230 minutes, and when people see a dolphin jumped out on the water, this is a dolphin in ventilation. In the meantime, Dolphin habitats for more than a few more shallow sea, into the depths o

The porpoise is in the water surface air change marine animal, each air change may at submarine maintain 230 minutes, when the people in marine saw porpoise when leaps from the water surface, this is the porpoise is taking a breath.At the same time, porpoise's habitat many is the epicontinental sea,

Dolphin is the ventilation of marine animals in the water, every breath under water for twenty or thirty minutes, when people see dolphins in the sea from the time the water jumped out, this is the Dolphin breath. At the same time, Dolphin Habitat is in shallow water, rarely travel into the deep oce