Pi orbital

pi

n. 圆周率\\n[计] 处理器接口, 程序中断

orbital ['ɔ:bitl]

adj. 轨道的;眼窝的;

So save your voices till then.

所以， 留着点嗓子。

English has become an international language.

英语已经成为一门国际语言。

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。