绝大多数人类挤着生活在山谷中，依靠淡水维系生存。
Humans overwhelmingly live in valleys, and on supplies of fresh water.
绝大多数人类，同时还会表现在四肢和五官上。
Arms and legs work the same way in most humans, as well as the five senses.
到目前为止，绝大多数人类病例还是同受感染的禽类接触引起的。
So far, most human cases have been linked to contact with infected birds.
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