Dichroine b

dichroine

常山碱

You had better study hard.

你最好努力学习。

Three removes are as bad as a fire.

三次搬家犹如一次失火。

The only way that they can preserve their history is to recount it as sagas -- legends handed down from one generation of another.These legends are useful because they can tell us something about migrations of people who lived long ago, but none could wri

他们保存历史的唯一办法是将历史当作传说讲述，由讲述人一代接一代地将史实描述为传奇故事口传下来。