你有没有听过有一种树木，它们是陆地动物和海洋生物的家园？
Have you ever heard of the trees that are homes over animals both on land and sea?
他们认为，开始适应水生生活的陆地动物很快就会变成既不是鸟也不是鱼，无法在任何一种环境中生存。
They contended that land animals that began to adapt to aquatic life would soon be neither fowl nor fish, incapable of surviving in either medium.
大象是地球上最大的陆地动物。
你有没有听说过有一类树木是陆地动物和海洋动物的栖息地？
Have you ever heard of the trees that are homes to animals both on land and sea?
因为现代陆地动物的体型都比不上蜥脚类动物，科学家们也缺乏一种类似的活物参考以了解蜥脚类动物可能做出的行为。
Because no modern land animals even approach sauropod size, scientists have also lacked a living analogue to use as a guide to possible sauropod behavior.
它们是最大的陆地动物，能活至70岁。
肉畜和乳畜目前占陆地动物生物总量的约20%。
Meat and dairy animals now account for about 20 percent of all terrestrial animal biomass.
猎豹是跑得最快的陆地动物。
许多陆地动物是从水生生物演化而来的。
因为需要水里的技能，而人类是陆地动物。
This is because it's an aquatic skill while humans are terrestrial mammals.
鱼类的肌肉和陆地动物的肌肉有很大不同。
陆地动物被认为是由海洋动物进化而来的。
Land animals are believed to have developed from sea animals.
陆地动物被认为是从海洋动物进化而来的。
Land animals are thought to have developed from sea animals.
事实上，据说其皮毛是所有陆地动物里最柔软的。
In fact, it is said that their fur is the softest out of all land mammals!
由于冰太冷，大多数植物和陆地动物都不能在冰上生活。
But most plants and land animals cannot live on the ice. It is too cold.
几乎总是由于某些特殊的条件，陆地动物的遗体才被存下来。
It is almost always due to some very special circumstances that traces of land animals survive.
科学家们发现这些动物包括3万种陆地动物，和一小部分鳍刺类鱼。
This includes 30, 000 species of land animals - including humans - and a similar number of ray-finned fish, the scientists found.
因为我们是陆地动物，因此游泳对我们来说往往要做出一定的妥协。
Because we are land based animals, swimming often presents us with compromises.
科学家们发现这些动物包括3万种陆地动物，和一小部分鳍刺类鱼。
This includes 30,000 species of land animals - including humans - and a similar number of ray-finned fish, the scientists found.
日本之所以对CITES保持怀疑原因在于CITES对大象和其他陆地动物的保护途径。
Japan is sceptical about CITES because of the way it has been applied to elephants and other land animals.
猎豹图片。延伸加快速度到60英里（96公里）每小时，猎豹是最快的陆地动物。
Reaching speeds up to 60 miles (96 kilometers) per hour, cheetahs are the fastest land animal.
与大多数陆地动物不同，供人类消费的水生动物为冷血品种，也就是说它们的体温会根据环境温度而变化。
Unlike most terrestrial animals, aquatic animal species used for human consumption are poikilothermic, meaning their body temperatures vary according to ambient temperatures.
考古学家同事发现许多大型陆地动物和植物化石，比如一只祖龙的尖牙和一些古代针叶松类型的植物化石。
Archaelogists also discovered a number of larger land-based animals and plant fossils including the sharp tooth of an archosaur and the remains of some ancient conifer-like plants.
和人们已熟知的北极区域一样，它那令人难以亲近的气候和狂野的海浪使得陆地动物无法迁移至此和繁衍。
Its forbidding climate and wild seas prevented the migration and development of land animals such as the Arctic regions know.
和人们已熟知的北极区域一样，它那令人难以亲近的气候和狂野的海浪使得陆地动物无法迁移至此和繁衍。
Its forbidding climate and wild seas prevented the migration and development of land animals such as the Arctic regions know.
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