石油、天然气、煤炭和和许多电力资源都是不可再生的一旦被使用了，就被用掉了，从而会引起价格上涨并限制生产力的进一步提高。

Oil, natural gas, coal, and many of the sources of electricity are nonrenewable-as they are used, they are also used up, raising prices and limiting further increases in productivity.

youdao

但是，数据建模要简单得多，因为现实世界中，信息并不总需要规范。而且，因为限制少了，应用开发者的生产力也提高了。

But "modeling" the data is far simpler, because the real world just isn't always normalized and app developers can be much more productive with less constraints.

youdao

但是，数据建模要简单得多，因为现实世界中，信息并不总需要规范。而且，因为限制少了，应用开发者的生产力也提高了。

But "modeling" the data is far simpler, because the real world just isn't always normalized and app developers can be much more productive with less constraints.

youdao