It is spread by contact with an infected animal's saliva, usually from a bite.

接触已被感染动物的唾液来散播，通常因被咬而感染。

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Rabies is a viral disease usually transmitted by a bite from an infected mammal.

狂犬病是一种病毒病，通常是由被感染动物的咬伤传播的。

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Before the advent of black mamba antivenin, a bite from this fearsome serpent was 100 percent fatal, usually within about 20 minutes.

在黑曼巴抗毒血清出现之前，被这种恐怖的蛇咬上一口必死无疑，通常在20分钟内就会死去。

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