It said that numbers of species have recovered enough to permit whaling.

报告显示，许多类已恢复至允许捕捞的数量。

Whales return to the warmth of western Greenland, amongst them are narwhals.

类纷纷回到温暖的西格岸。其中的一种是角。

And it was only one of many species of carnivorous whales in the middle Miocene.

而且，它只是中新世中期众多食肉类中的一种。

It is China's only large whale found in coastal waters.

自此，它们成为了我国唯一一种活动于近岸的大型类。

Some whale species are dying off because climate change has affected their supply of food.

由于气候变化影响了类的食物供应，一些类正灭绝。

Those vertical lines entangle and kill endangered sea turtles and multiple whale species-including the North Atlantic right whales.

这些竖绳缠住并杀死濒临灭绝的龟和包括北大西洋露脊内的多种类。

There's a huge difference in the fact that the whales would have sonar and could use that to detect food.

类能够用声纳来探测食物的事实带来了巨大区别。

Rolland and her team studied baleen, a substance found in the upper part of the mouth of some kinds of whale.

罗和团队研究了须，一种位于某些类嘴巴上的物质。

The venture cetaceans can be divided into three big subspecies, each typified by big-name investors.

创业类可分为三大亚种，各以大牌投资人为代表。

The skeletons of early whales revealed a fascinating transformation.

早期类的骨骼揭示了一种令人着迷的转变。

The biting sperm whale of Japan is found in deposits that also have dolphins, other whale, very primitive sea lion like animals.

本发现的噬抹香所处的沉积层还有豚、其它类、非常原始的类似狮的动物。

Without plankton, which is the global term for these tiny organisms, there would be no whales.

没有了这些浮游生物，也就是这些微生物的全球术语，类也就不复存了。

Some  of the first mammals to live underwater were likely the ancestors of modern cetaceans, like  whales and dolphins.

一些最早水下生活的哺乳动物可能是现代类的祖先，如鱼和豚。

Similarly, the evolution of whales from land-dwelling creatures has remained a subject of fascination for scientists.

同样，类从陆地生物进化而来的过程一直让科学家们着迷。

However, the discovery of certain fossils provided crucial evidence that pointed toward the whale's evolutionary past.

然而，某些化石的发现提供了指向类进化历史的重要证据。

Regina Asmutis-Silvia is a biologist with the Whale and Dolphin Conservation in Massachusetts. She was not involved in the research, but she says it is important.

瑞吉娜·埃斯穆提斯-西尔维娅（Regina Asmutis-Silvia）是马萨诸塞州类和豚保护组织的生物学家。她没有参与这项研究，但她说该研究十分重要。

Did erudite Stubb, mounted upon your capstan, deliver lectures on the anatomy of the Cetacea; and by help of the windlass, hold up a specimen rib for exhibition?

是那个博学的斯塔布，高踞于绞盘顶上，向你发布过有关类解剖学的演讲吗；还是绞盘的帮助下，吊起过作为样本的肋骨供你观看？

There is a Leviathanic Museum, they tell me, in Hull, England, one of the whaling ports of that country, where they have some fine specimens of fin-backs and other whales.

他们告诉我，英国的捕港口赫尔，有一家鱼博物馆，那里有几头非常棒的脊鳍和其他类的标本。

The relationship between modern whales and their land-dwelling ancestors is an excellent example of how evolution works over long periods of time, reshaping animals to suit their environments.

现代类与其陆生祖先之间的关系是长时间内进化如何运作的极佳示例，它重塑了动物以适应其环境。

This wolf-like creature, which is believed to have lived around 50 million years ago, is thought to be one of the earliest ancestors of the modern whale.

这种类似狼的生物被认为生活大约5000万年前，被认为是现代类的最早祖先之一。