Principle of program design

principle ['prɪnsəpl]

n. 原则，原理;准则，道义;道德标准;本能;

prim, prin 表”首先的,领头的”

of [əv]

prep. 关于;属于…的;由…制成; aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];

program ['proɡræm]

n. 程序;节目，节目单;计划，安排; v. [计]给…编写程序;为…制定计划;设计安排活动;编排;

pro在前+gram写，图→在前面写好→计划；提纲

design [dɪ'zaɪn]

vt.& vi. 设计;绘制; vt. 设计;计划;企图;决意（做）; n. 设计;图案;结构;计划; vi. 设计略图;（为工艺品、装潢项目等）设计;当设计师;构思;

de使…成为，加强+sign做标志→设计，计划

Grandpa,

爷爷，

That's fine.

那很好。

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。