adj.鲸目动物的，鲸类的
n.鲸类

原形：cetacean复数：cetaceans

The cetacean family includes whales, dolphins, and porpoises.
鲸目动物科包括鲸鱼、海豚和鼠海豚。
Scientists estimate that there are over 80 species of cetaceans worldwide.
科学家估计全球有超过80种鲸目动物。
The blue whale is the largest cetacean and the largest animal on Earth.
蓝鲸是最大的鲸目动物，也是地球上最大的动物。
Cetaceans are highly intelligent marine mammals with complex social structures.
鲸目动物是非常聪明的海洋哺乳动物，具有复杂的社会结构。
Orcas, also known as killer whales, belong to the dolphin family within the cetacean order.
虎鲸（也称为杀人鲸）属于鲸目内的海豚科。
Some cetaceans, like humpback whales, are known for their beautiful songs.
像座头鲸这样的鲸目动物以其美妙的歌声而闻名。
Unfortunately, many cetacean species are threatened by pollution, overfishing, and entanglement in fishing nets.
不幸的是，许多鲸目物种都受到污染、过度捕捞以及渔网缠绕等威胁。
Conservation efforts aim to protect cetaceans from hunting, habitat destruction, and noise pollution.
保护工作旨在保护鲸目动物免受狩猎、栖息地破坏和噪声污染的影响。
Biologists study cetacean behavior by observing their interactions with each other and their environment.
生物学家通过观察鲸目动物与同伴及环境之间的互动来研究其行为。
The spinner dolphin is a type of cetacean famous for its acrobatic displays above the water's surface.
翻滚海豚是一种著名的鲸目动物，因其在水面上空进行的高难度翻滚表演而知名。