n.繭；繭狀物
v.包圍；包裹
Silkworms make cocoons. 蠶做繭。
A cocoon is a kind of silk covering made by an insect. 蠶繭是由昆蟲制造的一種由絲組成的外包層。
The children tore the cocoon open to see if there was a pupa. 孩子們撕開蠶繭看看里面有沒有蛹。
用作動(dòng)詞 (v.)The last thing he wants to do is to cocoon all weekend in that same house. 他最不愿意做的事是整個(gè)周末呆在同一幢房子里繭居。
