1. 定义：Cetacean是指鲸类动物，包括海豚、鲸鱼、抹香鲸等。该单词的拉丁语根词“cetus”意思是“大鱼”。
2. 分类：Cetacean按照口齿构造被分为齿鲸类和须鲸类，齿鲸类包括虎鲸、鲸、大角鲸等，须鲸类包括抹香鲸、蓝鲸、露脊鲸等。
3. 特征：Cetacean具有完美的游泳能力，身体呈流线型，肢体发展不全，前肢演化成鳍状结构，尾巴发展成扇形的尾鳍。Cetacean的鼻孔位于头顶上方，可以在水中呼吸。
4. 环保：Cetacean是海洋的重要组成部分，但由于人类的活动，它们的生境受到威胁。因此，保护Cetacean已成为环保工作的重要组成部分。
中英例句：
1. Blue whales are the largest cetaceans in the world.蓝鲸是世界上最大的鲸类动物。
2. Dolphins are highly intelligent cetaceans that have a well-developed social structure.海豚是高度智能的鲸类动物，它们有完备的社会结构。
3. The whaling industry has contributed greatly to the decline of many cetacean populations.捕鲸业对许多鲸类动物种群的减少贡献巨大。
4. The sighting of a rare cetacean species is always a cause for excitement among marine biologists.发现一种罕见的鲸类动物总是令海洋生物学家兴奋不已。
5. Several cetacean species, including humpback whales and orcas, are known for their complex vocalizations.多种鲸类动物，包括座头鲸和虎鲸，以其复杂的声音而闻名。
中文翻译：鲸目动物
读音：[sɪˈteɪʃən]
例句：
1. Dolphins and whales are both cetaceans that are often seen in the ocean.
海豚和鲸鱼是常在海中看到的鲸目动物。
2. Many cetaceans are threatened by human activities such as hunting, pollution, and boat traffic.
许多鲸目动物都受到人类活动的威胁，如捕猎、污染和船只交通等。
cetacean通常被翻译为”鲸类的动物、鲸类动物”的意思，在英美地区还有”鲸目动物”的意思，读音为[si’teiʃjәn]，cetacean是一个英语名词，在《英语发音在线词典》中，共找到19个与cetacean相关的句子。
1.鲸类的动物
例句:The Lipotes brain exhibits typical cetacean characteristics. (白鱀豚的脑表现出典型的鲸脑特征。)
2.鲸类动物
例句:I think we’ll find what we’re looking for at the Cetacean Institute in Sausalito. (我想我们会在索斯里托的鲸鱼馆 找到我们想要的)
3.鲸目动物
例句:”Losing the baiji is like taking a chain saw to the cetacean tree of life, ” says Hamilton. (“消失的白鳍豚仿佛锯开了鲸目生物的生命之树。”哈密尔顿说。)
4.鲸豚类动物、鲸目动物
例句:Cetacean experts do not expect whales to escape this slick completely. (翻译:鲸类专家对于鲸鱼能完全逃离油污带不抱希望。)
1. “Losing the baiji is like taking a chain saw to the cetacean tree of life, ” says Hamilton. (翻译:“消失的白鳍豚仿佛锯开了鲸目生物的生命之树。”哈密尔顿说。)
2. Cetacean experts do not expect whales to escape this slick completely. (翻译:鲸类专家对于鲸鱼能完全逃离油污带不抱希望。)
3. The Cetacean Institute is the only museum in the world exclusively devoted to whales. (翻译:鲸鱼研究院世界上唯一只展示 与鲸鱼有关的物品的馆所)
4. Commonly referred to as the melonhead, the beluga is an Arctic and sub-Arctic cetacean. (翻译:白鲸是出没于北极和北极附近的鲸鱼，它们经常被叫成“蜜瓜头”。)
5. Cetacean experts do not expect whales to escape this slick completely. (翻译:鲸类专家对于鲸鱼能完全逃离油污带不抱希望。)
6. Any of various Marine cetacean mammals, such as the bottle – nosed dolphin, of the family Delphinidae, related to the whales but generally smaller and having a beaklike snout. (翻译:海豚一种海豚科海洋鲸类哺乳动物，如的宽吻海豚，与鲸近似但一般比鲸小且有喙状吻。)
7. For people interested in cetacean evolution the most perplexing problem has always been: Why are there so many species of [beaked whale]? (翻译:对于那些对鲸豚类进化感兴趣的人来说，最困扰的问题总是：为什么突吻鲸会有那么多的种类？)
8. any of several small gregarious cetacean mammals having a blunt snout and many teeth. (翻译:钝圆并长很多牙齿的几种小型群居的鲸类哺乳动物。)
9. It is believed that the sperm whale dives deeper than any other cetacean. (翻译:人们相信，抹香鲸比其他鲸类动物潜得更深。)
10. Beaked whales and the narwhal are the only cetacean species with tusks, according to Baker. (翻译:贝克指出，在鲸豚类中，只有突吻鲸和独角鲸具有獠牙。)
