cocoon 英文释义：silky envelope spun by the larvae of many insects to protect pupas and by spiders to protect eggs
cocoon 中文翻译：n.1.(蚕)茧；(昆虫的)卵袋；(蚯蚓等的)土房；(蜘蛛等的)子囊。2.茧状物；(军用物品等的)塑料披盖，防护喷层。vt.1.作茧包藏，把…包在茧内。2.以茧状物[喷层]包(军用品等)。短语和例子cocoon the patient in blanket 把病人裹在毯子里。vi.作茧，成茧状。
