大象是自然界中最庞大的四脚动物。

The elephant is the largest four-footed animal in the nature.

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不过在美国，有非常严格的宠物疫苗接种和流浪狗控制制度，因此狂犬病以不同的方式传播：浣熊和臭鼬是迄今最主要的四脚动物宿主。

But in the United States, where pet vaccination and stray-dog-control programs are strong, rabies has a different face: Raccoons and skunks are by far the top four-legged viral hosts.

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但对四脚站立的动物来说，真正在这些运动中支撑身体重量的是脚垫。

But for four-legged critters, it's the footpads that ultimately support the animal's weight.

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