human old tuberculin

例句：

1. 1. Humans are the only animals that can use tools.
   人类是唯一能够使用工具的动物。
2. 2. Humans have a unique ability to communicate through language.
   人类拥有通过语言进行独特沟通的能力。
3. 3. Humans play an important role in the development of society.
   人类在社会发展中扮演着重要的角色。