The city is an extraordinary processor of mass and energy and has its own metabolism.

城市是质量和能量的特殊处理器，有着自己的新陈代谢。

youdao

Mass and energy — I'm an open system, right?

质量和能量——我是个开系，对吧？

youdao

Overall, dark energy is thought to contribute 73 percent of all the mass and energy in the universe.

总的来说，一般认为暗物质占据了宇宙中73%的质量和能量。

youdao

It involves the relationship of energy, mass and the speed of light, written as the letter c.

VOA: special.2010.07.16

An open system, as the name describes, allows mass and energy to freely flow through the boundary.

开系，顾名思义，允许质量和能量自由地,流过它的边界。

麻省理工公开课 - 热力学与动力学课程节选

Mass and energy flow through boundary.

质量和能量流过边界“

麻省理工公开课 - 热力学与动力学课程节选

Foster rethought this completely and realized huge savings in structural mass and energy consumption could be made by shifting the utilities underground, leaving a floating roof and walls that could open to natural daylight.

CNN: ASIANOW - TIME Asia

They are a large group, a vital group in the development of any community or region, and provide both the critical mass, ideas, and energy to grow our metropolitan regions.

FORBES: ZOGBY: Demographics and 2012 - The Creative Class

Because it has less to do with standing still and more to do with how you use velocity, energy, and mass to keep moving forward.

FORBES: For Work-Life Happiness: Stop Balancing, Start Leaning In