The picture actually shows a child's neocortex—a part of the brain that controls sight and hearing.

这张照片实际上展示了一个孩子的大脑新皮层，即大脑中控制视觉和听觉的部分。

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Let's see how sight and hearing work.

我们来看看视觉和听觉的工作情况。

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At 19 months old, Helen Keller became ill and lost her sight and hearing (before she'd learned to speak).

在她才19个月大的时候，海伦·凯特就因疾病夺去了视力和听力(在她学说话之前)。

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What did she think about the tragic loss of her sight and hearing?

VOA: special.2009.11.15

This is especially true if they result from drugs,infection, sight or hearing problems, head injury,and heart or lung problems.

VOA: special.2009.09.15

She suffered broken bones and severe head injuries which continue to affect her hearing,sight,and memory.

VOA: special.2009.10.30

Our center diligently adheres to never being alone with a child and never out of sight and hearing of another adult.

FORBES: Why We Should Teach Empathy To Improve Education (And Test Scores)

Sir Edward, 85, who was losing his sight and hearing, died on Friday alongside his terminally ill wife, 74, at Swiss right-to-die centre, Dignitas.

BBC: Suicide couple reignite debate

Twelve guides will aid people with both sight and hearing loss with a range of issues, including the use of computers, telephones and public transport.

BBC: Funding to train deafblind guides in Cumbria