In contrast, fruit juices and dried fruits are concentrated sources of natural sugar and therefore have a high energy density - more calories - and they don't fill you up as much.

相较而言，水果汁和干制水果是富含天然糖分，因此能量密度高，卡路里高，同时也不容易让人感到饱足。

youdao

Wind and solar generation tend to be distributed because of the low density of the natural energy they collect.

由于它们采集天然能源的地点非常分散，因此风能和太阳能的发电也呈现出分散状态。

youdao

Pattern density, which can make mature object-oriented frameworks hard to change, is a natural result of the way object-oriented developers design systems.

模式密集可能导致成熟的面向对象框架难以修改，但这是面向对象开发人员设计系统的方法所带来的自然结果。

youdao

Nor can they compare to the power density of sources like natural gas, oil and nuclear.

FORBES: Magazine Article

Moreover, with the exception of the continent's handful of natural resource-rich, low population-density countries like Angola (see my September 9, 2008 column advocating an intensified strategic engagement with the geopolitically significant Southern African country), most of America's would-be partners are constrained by lack of the financial wherewithal to upgrade their capabilities to meet even short-term priorities.

CENTERFORSECURITYPOLICY: A stimulus for African security

While conspiracy theorists may want to believe that Big Oil, Big Coal and Big Nuclear are stifling the growth of renewables, the simple truth is that coal, oil, natural gas and nuclear can satisfy the Four Imperatives: power density, energy density, cost and scale.

FORBES: Magazine Article