Writer-director Sian Heder, who can hear, learned American Sign Language for the project.

作家兼导演希恩·海德听力没问题，不过他为了这部电影学习了美国手语。

They learned American Sign Language and other ways to work with and perform to people with disabilities.

他们学习了美国手语和其他与残疾人一起工作和表演的方式。

" 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。"

I think my nephew studied American Sign Language.

我想我的侄子学过美国手语。

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。

There are actually quite a few people who study American Sign Language.

实际上有不少人学习美国手语。

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。

The French sign language these teachers brought started to combine with the signs that students made up at home or in their own communities to create American Sign Language or ASL.

这些老师带来的法语手语开始与学生在家里或他们自己的社区中制作的手语结合起来，创造出美国手语或 ASL。