There's a wonderful case in Nicaragua in sign language where they acquire sign language from adults who themselves are not versed in sign language.

研究者在尼加拉瓜曾做过,一个精彩的手语个案研究,儿童们从本身并不熟悉手语的成年人那里,习得手语

耶鲁公开课 - 心理学导论课程节选