cocoon

茧

The caterpillar spun a cocoon on the underside of a leaf.

毛毛虫在叶子背面结了一个茧。

保护壳、避风港比喻

She grew up in a cocoon of wealth and never faced real hardship.

她在富裕的保护壳里长大，从未遭遇真正的困境。

包裹、裹住常用被动

The baby was cocooned in a thick woolen blanket.

宝宝被厚厚的羊毛毯包裹著。

窝在家里、闭门不出

After the breakup, he cocooned at home for weeks.

分手后，他好几个星期都窝在家里不出门。