鲸类

But you have to understand that dolphins and other whales are not automatic air breathers, like we are.

但你得知道，海豚和其他鲸类，它们的呼吸不是自主的，不像我们。

It has been speculated that,as the blowholes evolved and migrated to the top of the head,the neural pathways serving sense of smell may have been nearly all sacrificed.

据推测，由于呼吸孔转移到头顶，鲸类的嗅觉神经通路几乎退化。

Whose sole purpose is to protect all cetaceans in the wild.

它的唯一宗旨就是保护各种野生鲸类动物

Most of these animals comprise a group known as the cetaceans, which includes the dolphins and whales.

大部分这些动物包括一组命名为鲸类动物，其中包括海豚和鲸鱼。

This study describes the potential geographical distribution of the most frequently sighted marine cetaceans in Venezuelan waters.

本研究阐述了委内瑞拉沿海最常见的海洋鲸类的潜在地理分布情况。

Breathing air and then diving, cetaceans can hold their breath for unimaginable lengths of time.

呼吸空气，然后在潜水，鲸类能容纳他们一口气为难以想象长的时间。

These are attractive waters for cetaceans because of the bounty of prey found in the Kaikoura Canyon.

这些是有吸引力的水域因为鲸类由于慷慨的被猎食者找到在新西兰凯库拉峡谷。

They are often called cetaceans.

他们通常被称为鲸类。

Cetaceans reduce the number of breaths they take during rest periods.

鲸类动物在休息时减少它们的呼吸次数。

Now an American film has turned a spotlight on Japan's coastal hunt for cetaceans.

现在，美国的一部电影将镜头对准日本在沿海捕杀鲸类的行为。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐