Optimization of regions

optimization [,ɔptimai'zeiʃən, -mi'z-]

n. 最佳化，最优化;优选法;优化组合;

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];

regions

n. 地区；地域；领域（region的复数）

That was so thoughtful of you, Michelle.

你想得真周到， Michelle

Have a heart!

行行好嘛！

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。