这些动物的饲养条件极其恶劣。
他们曾观察过这些动物的习性。
They had observed regularities in the behaviour of the animals.
应该积极改变动物的饲养方式。
There are positive changes that should be implemented in the rearing of animals.
他们先将胶囊植入那些动物的大脑。
这部电影似乎在激发人们对动物的普遍怜惜之情。
The movie seems to tap into a general sentimentality about animals.
大部分信息都是通过直接观察动物的行为收集到的。
Most information was collected by direct observation of the animals' behaviour.
英国曾有反对虐待动物的法律，却没有一部保护儿童的法律。
Britain had laws against cruelty to animals but none to protect children.
我认为，任何伤害到动物的体育运动都是野蛮的、不文明的。
I think any sport involving harm to animals is barbaric and uncivilized.
有些动物的尾巴用来悬挂自己。
它对改善动物的健康有很大帮助。
澳大利亚大型动物的遭遇令人费解。
丛林是动物的良好隐蔽处。
我是研究动物的科学家，比如猿和猴子。
I'm a scientist who studies animals such as apes and monkeys.
人类与动物的不同在于前者能够使用语言。
Human beings differ from animals in that the former is capable of using language.
食物短缺或过度捕猎都可能威胁到动物的数量。
Either food scarcity or excessive hunting can threaten a population of animals.
他们可以监督牛、猪和其他动物的标价评判过程。
They can watch the judging of the priced cows, pigs and other animals.
想象一个不再有动物的世界：没有大象、老虎或狮子。
Imagine a world with no more animals: no elephants, no tigers or lions.
人们早就知道，在感染期间，动物的血清铁水平会下降。
It has long been known that the level of serum iron in animals falls during infection.
湿地是多种野生动物的栖息地。
我永远无法忍受伤害动物的残暴行为。
I could never stomach the cruelty involved in the wounding of animals.
他偶然发现了一个450万年前的有袋动物的颌骨。
He came across the jawbone of a 4.5 million-year-old marsupial.
雄性动物的求偶有点大肆声张的，他们要大力炫耀自己。
Courtship is somewhat vocal with a lot of displaying by the male.
科学家正试图把已灭绝动物的特征与现存类似动物相比较。
Scientists are attempting to compare features of extinct animals with living analogues.
哺乳类动物的例子有人类，猪和狗。
《狼来了》是一个关于动物的故事。
每天，杜立德医生都在学习动物的语言。
Every day, Dr. Dolittle learned the languages of the animals.
我们对待动物的方式是对的还是错的？
这里有两个关于人和动物的真实故事。
在村子里，有许多动物的画，比如猫和鸟。
In the village, there were many paintings of animals, such as cats and birds.
本课程教授小朋友画人物和动物的基本技巧。
This course teaches children the basic skills of painting people and animals.
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