talk off the top of one's head
talk off the top of one's head是什么意思、talk off the top of one's head怎么读
作即席谈话, 假充内行谈论自己不熟悉的题目
talk off the top of one's head汉语翻译
作即席谈话, 假充内行谈论自己不熟悉的题目