Bats are the only mammals to have wings and to achieve sustained flight.

蝙蝠是唯一有翅膀且能持续飞行哺乳动物。

Whales are mammals that live in the sea.

鲸是洋中哺乳动物。

The boa feeds on birds and small mammals.

蟒主吃鸟和小哺乳动物。

The whale is the largest mammal in creation.

鲸鱼是所有哺乳动物中最大。

Defensin is a widely existed antimicrobial peptide in plants, insects and mammals.

防御素是一种广泛存于动植物界抗菌多肽。

In regard to animals, Diphyodont evolved into Reptilia, which evolved into mammals.

动物是由两进化为爬虫，再进化为哺乳类。

There are lots of marine mammals such as whales and seals in the sea.

洋里有许多诸如鲸鱼和豹类哺乳动物。

Suckling is an instinct in mammals.

哺乳是哺乳动物本能。

Most mammals are diphyodonts.

大部分哺乳类动物有乳齿及永久 齿之别。

Birds differ from mammals.

鸟类与哺乳动物不同。

Most mammals live on land.

大多数哺乳动物陆地上。

Whales belong among the mammals.

鲸鱼属于哺乳动物。

The function of a mammal's fur is to insulate the body.

哺乳动物皮毛功能于使身体保温。

Forests are important habitats for birds and, in temperate forests, small mammals which inhabit the dense understorey.

森林对鸟类来说是重息地，而且温带森林里，小型哺乳动物居住稠密森林下层。

There is a close analogy between the gills of a fish and the lungs of a mammal.

鱼鳃与哺乳动物肺很相似。

Last December scientists announced the probable extinction of the first mammal because of climate change: the white lemuroid possum, now gone from Queensland, Australia.

2008年12月，科学家宣布第一个可能因气候变迁而灭绝哺乳类：白狐猴负鼠，已经从澳洲昆士兰消失了。

The north of zhungeer is the main district of Central Asia desert mammal population and the mammal in Altai is north subfrigid zone coniferous forest pattern.

摘准噶尔盆地北沿与阿尔泰山地兽类,山区以北方针叶林型动物群为主,平原以中亚荒漠型动物群居多,广布种掺杂其间。

Eusocial colonies are common among insects such as bees and ants, but the only examples in the mammal world are among furry and the naked mole rats.

群居族群现象如蜜蜂和蚂蚁等昆虫世界中很常见，但哺乳动物中，只有毛鼹鼠和裸鼹鼠会是这样。

Schistosome infected people or other mammals from the discharge of faecal egg, if manure contaminated the water, eggs were brought into the water, hatched miracidium in the water.

感染血吸虫人或其它哺乳动物从粪便中排出虫卵，若粪便污染了水，虫卵被带进水中，水里孵出毛蚴。

LDH-C4 is specific to mature testes and spermtozoa of bird and mammal.It is related to metabolic processes that provide energy for motility and survival of spermtozoa.LDH-C4 is an autoantigen.

摘精子特异性乳酸脱氢酶特异地存于鸟类和哺乳类动物成熟睾丸和精子中，为精子运动和存提供能量。