oral literature

• 口头文字

oral literature的用法和样例：

例句

1. Probably picture language and oral language developed side by side.
   绘图文字和口头语言很可能是并驾齐驱发展起来的。
2. Most folktales eventually move from oral tradition to written form.
   大多数的民俗故事最终会从口头传统演变成文字形式。