| 单词 | 换气 |
| 释义 | 〔blowhole〕An opening or one of a pair of openings for breathing, located on the top of the head of cetaceans, such as whales and dolphins. The blowhole is opened by muscles upon surfacing and closed by the pressure of water upon diving.鲸鱼类的喷水孔：在鲸目动物（如鲸、海豚）头顶，用于换气的单鼻孔或双鼻孔中的一个。当鼻孔在水面上时，由动物肌肉牵引而张开，在水下时，由水的压力合上〔hypoventilation〕Abnormally slow and shallow respiration, resulting in an increased level of carbon dioxide in the blood.肺换气不足：不正常地低而浅的呼吸，由血液中二氧化碳含量增加引起的〔louver〕A slatted, ventilating opening, as on the hood of a motor vehicle.放气孔：有条板的换气口，比如在车辆的引擎盖上〔blowhole〕A hole in ice to which aquatic mammals, such as dolphins, come to breathe.冰上的孔穴：生活在水中的哺乳动物，如海豚，前来换气的冰面上的孔 |
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