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- The zoology of whales and related aquatic mammals. 鲸(类)学研究鲸和与其有亲缘关系的水生哺乳动物的动物学
- Any of several related aquatic mammals,such as the dolphin. 鼠海豚属的动物与鼠海豚有关的几种水生哺乳动物的一种，例如海豚
- Any of several related aquatic mammals, such as the dolphin. 鼠海豚属的动物与鼠海豚有关的几种水生哺乳动物的一种，例如海豚
- 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。
- 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
- A wide,flat limb,as of a seal,whale,or other aquatic mammal,adapted for swimming. 鳍，鳍足海豹、鲸或其它水生哺乳动物的宽而扁的适于游泳的肢
- Thus, even a century after Darwin, these aquatic mammals remained an evolutionary enigma. 因此，即使达尔文过世超过一个世纪，这些海栖哺乳类仍然是个演化谜团。
- These large aquatic mammals are notable for the way in which they carry their young, cradled in their arms much as a human would carry a baby. 这种巨大的水中哺乳动物以它们怀抱幼仔的方式闻名，它们将手臂挽成摇篮状，就像人类托着自己的婴孩一般。
- Any of various small whales,porpoises,or similar aquatic mammals,especially a whale of the genus Mesoplodon,having a pointed snout. 啄鲸一种小型鲸、海豚或类似的水生哺乳动物，尤指啄鲸属的一种有尖啄的鲸鱼
- Any of various small whales, porpoises, or similar aquatic mammals, especially a whale of the genus Mesoplodon, having a pointed snout. 啄鲸一种小型鲸、海豚或类似的水生哺乳动物，尤指啄鲸属的一种有尖啄的鲸鱼
- Of or belonging to the Pinnipedia,a suborder of carnivorous aquatic mammals that includes the seals,walruses,and similar animals having finlike flippers as organs of locomotion. 有鳍状肢的属于鳍脚亚目动物的，肉食水生动物的一个分支，包括海狮、海象及其他类似的用鳍状肢行进的动物。
- The disappearance of the baiji would be the first instance of a large aquatic mammal being driven to extinction since hunting killed off the monk seal around 1952. 自1952年左右僧海豹由于人类狩猎而惨遭灭绝以来,白暨豚的消失是大型水生哺乳动物被赶尽杀绝的第一例。
- Of or belonging to the Pinnipedia, a suborder of carnivorous aquatic mammals that includes the seals, walruses, and similar animals having finlike flippers as organs of locomotion. 长牙，獠牙一种伸长的尖的齿，通常有一对，延伸至嘴外，如海象、象、野猪等动物的长牙
- Any of various herbivorous aquatic mammals of the genus Trichechus, having paddlelike front flippers and a horizontally flattened tail and found in warm coastal waters of Florida, northern South America, West Africa, and the Caribbean. 海牛一种海牛属食草性水生哺乳动物，长有蹼状前鳍，居中扁平的尾巴，产于美国佛罗里达州、南美洲北部、西非和加勒比海地区海岸温暖的水域中
- Many forms of aquatic life inhabit ponds. 有很多种水生动植物均栖居於池塘。
- A whale is no less a mammal than a horse is. 鲸鱼和马一样都是哺乳动物。
- The whale is the largest mammal in creation. 鲸是世上最大的哺乳类动物。
- Swimming and water-skiing are both aquatic sports. 游泳和滑水都是水上运动。
- A corresponding organ in other mammals. 胸脯其它哺乳动物的相应器官
- We visited an aquatic city in Italy. 我们在义大利访问过一个水上城市。
