其他三种动物的区别在于它们食用的低处枝叶和高处茎杆的比例不同:斑马吃茎杆最多,角马吃叶子最多,而转角牛羚则介于两者之间。
The other three species differ in the proportion of lower leaves and higher stems that they eat: zebras eat the most stem matter, wildebeests eat the most leaves, and topi are intermediate.
动物在寒冷的冬天有三种主要的生存方式:休眠、适应或迁徙。
There are three main ways that animals survive the cold in winter: sleep, adapt or migrate.
一幅拉斯科岩洞叙事画描绘了一个头部像鸟的人和一只受伤的动物的故事,这似乎证实了第三种观点,但仍有许多未解之谜。
One Lascaux narrative picture, which shows a man with a birdlike head and a wounded animal, would seem to lend credence to this third opinion, but there is still much that remains unexplained.
And there are three properties of this diet that help promote overeating and obesity in laboratory animals.
而这种导致实验室动物,过度进食和肥胖的饮食具备三种特征
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