The mammalian evolution is carried out under the pressure of natural environment and survival competition.

哺乳动物的进化是在自然环境和生存竞争压力下进行的。

Biologists have discovered two new mammalian species.

生物学家发现了两个新的哺乳动物物种。

The government ordered the killing of many mammalian predators.

政府下令捕杀了很多哺乳动物捕食者。

The disease can spread from one mammalian species to another.

该疾病能够在不同的哺乳类物种之间传播

The disease can spread from one mammalian species to another.

该疾病能够在不同的哺乳类物种之间传播。

Apparently that monogamous mammalian instinct is weak.

显然哺乳动物的一夫一妻制天性很薄弱。

Casein is the protein in cow's milk, as well as all mammalian milk.

酪蛋白是牛奶以及所有哺乳动物奶中的蛋白质。

Nor were all the strange creatures charismatic, mammalian megafauna.

但是，并不是所有奇怪的物种都是像哺乳动物一样是有灵性的。

Ferrets are another mammalian species known to be susceptible to infection.

雪貂是另一种已知易受感染的哺乳类动物物种。