For most of the species's existence, humans lived in small foraging bands that had little material surplus and therefore enjoyed a relatively egalitarian existence.

相对于绝大多数物种的存在方式而言，人类生活在一个很小的狭长地带，那里几乎没有剩余食物，因此可以以相对平等的方式生存。

youdao

Most metal and plastic parts are designed to be manufactured, which means they can be clunky and contain material surplus to the part's function but necessary for making it.

大多数金属和塑料是为了生产而设计的，这就意味着它们会很重，并且含有与生产有关，但与其功能无关的剩余物。

youdao

We can use this system to analyze the status of different material surplus and deficiency , control the dynamic material reserve in reason , avoid the material's overstock or the material's scarcity .

分析不同类别物料余缺状态，合理控制动态的物资储备，以避免物资积压及缺料。

youdao

For most of the species's existence, humans lived in small foraging bands that had little material surplus and therefore enjoyed a relatively egalitarian existence.

ECONOMIST: Your parents were right. Patience is a virtue

In its own interests, the West should go on buying up surplus nuclear material and ensuring, by bribery if need be, that underpaid Russian scientists do not sell their skills to rogue countries trying to build nuclear bombs.

ECONOMIST: And there is not a lot the West can do to help