n.茧，蚕茧；vt.把…紧紧包住； 变形： 复数：cocoons过去式：cocooned过去分词：cocooned现在分词：cocooning第三人称单数：cocoons 英英释义： cocoon[ kə'ku:n ]n.silky envelope spun by the larvae of many insects to protect pupas and by spiders to protect eggsv.retreat as if into a cocoon, as from an unfri