She is comfortably cocooned in pillows. [+ in]

她舒适地窝在枕头里。

...my snugly cocooned baby sleeping in his pram.

我的小宝贝包裹得舒舒服服的，正睡在婴儿车里

She was cocooned in a private world of privilege. [+ in]

她生活在一个与世隔绝的特权世界里。

They were cocooned from the experience of poverty. [+ from]

他们没受过穷。