例句：

　　It was her custom to rise early.

　　早起是她的習(xí)慣。

　　The origin of the custom is obscure.

　　該習(xí)俗的起源鮮為人知。

　　This quaint custom should be revived.

　　應(yīng)該恢復(fù)這一獨特的風(fēng)俗。