cocoon
n
1 silky covering made by an insect larva to protect itself while it is a chrysalis 茧.
2 any soft protective covering 任何保护性软套
wrapped in a cocoon of blankets 裹在毯子里. cocoon, v [esp passive 尤用於被动语态
Tn, Tn.pr]
cover or wrap (sb/sth) in a cocoon 将(某人[某物])盖在或裹在保护层里
cocooned in luxury 在奢侈的环境中.