1. It is easy to investigate various crime scenes, especially for the testes with physical defects such as deaf-mute, it is also valid. 容易实现对各种作案场景的检测，尤其是对有生理缺陷的被测试对象，如聋哑人，同样可以进行测试。
2. If his dream was to live in the woods, with a fireplace and a typewriter and sheaves of notes hooked on the wall, almost like a deaf-mute in his dealings with the world, that was his affair. 他的生活是住在树林中，屋里有壁炉，桌上有打字机，墙上挂着成捆的笔记，几乎像聋哑人一样与世界打交道——如果这是他梦想的生活的话。
3. However, compared to the normal population, the deaf-mute students who lost all or nelly most of the hearing, they have been lacking one kind of important cognitive ability——natural language. 然而，聋哑学生作为丧失了全部或大部分听力的特殊群体，与正常学生相比，他们缺少了一种重要的认知技能——自然语言。
英英解释
n.
1. a deaf person who is unable to speak
2. lacking the sense of hearing and the ability to speak
