Deaf American Sign Language 140 Means of communication 140 Education 70 Study and teaching 70 Deaf culture 59 Interpreters for the deaf 54 更多 ... Sign language 51 Training of 35 History 33 Deafness 22 Hearing impaired 21 Interviews 21 Services for 20 Social conditions 20 Family relationships 16 Social life and customs 16 Employment 15 Social aspects 15 Children of deaf parents 14 Cochlear implants 13 Deaf, Theater for the 12 Video recordings for the hearing impaired 12 American Sign Language, 11 Deaf college students 11 Education (Higher) 11 Holocaust survivors 11 Deaf children 10 Documentary films 10 Intercultural communication 10 少 ...