" We teach the parents how to use the sign language and that's good, enable the parents to communicate with their children" .

" 我们教父母如何使用手语，这很好，使父母能够与孩子沟通。"

And chimpanzees, gorillas, orangutans can learn human sign language of the Deaf.

而黑猩猩、大猩猩、猩猩可以学习聋人的人类手语。

So a child, a baby, starts out with no spoken or signed language.

所以，一个孩子，一个婴儿，一开始不会说或手语。

Obviously Helen couldn't see other people's sign language, so Anne used the letters from sign language to spell words into Helen's hands.

显然海伦看不到别人的手语，所以安妮用手语中的字母将单词拼到了海伦的手里。