念音	〔R104〕 What trees are not changed by being burnt? 〔译注〕 什么树被烧以后不会改变？ 〔提问〕 If they are a genus (种) of timber (木材) and shade (遮荫) trees, what are they? 〔谜底〕  a____
上一则 下一则　 回目录