1. COVID-19 is believed to be a zoonotic disease, originating from animals and transmitted to humans.

COVID-19被认为是一种从动物传播到人类的人畜共患病，起源于动物并传播给人类。

2. Rabies is a well-known zoonosis that can be transmitted to humans through the bite of an infected animal.

狂犬病是一种众所周知的人畜共患病，可以通过被感染动物咬伤传播给人类。