So, Susan Goldin-Meadow has studied deaf children that nobody signed to but what she studies is deaf children with deaf siblings and these children don't just sit there.

苏珊·葛丁麦道研究了,并无手语环境的失聪儿童,但她的研究发现,拥有失聪兄妹的失聪儿童,他们并不会傻坐在那

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