婴儿的大脑在头两年发展得特别快，所以睡眠非常重要。

Yīng'ér de dànǎo zài tóu liǎng nián fāzhǎn de tèbié kuài, suǒyǐ shuìmián fēicháng zhòngyào.

A baby’s brain develops especially fast in the first two years, so sleep is very important.

医生正在教新手父母怎样给婴儿洗澡。

Yīshēng zhèngzài jiāo xīnshǒu fùmǔ zěnyàng gěi yīng'ér xǐzǎo.

The doctor is teaching the new parents how to bathe their baby.