Photosynthesis is the most important chemic reaction in the world, and it is the ultimateenergy source of any living organisms.
光合作用是地球上最重要的化学反应，是所有生命活动能量的最终来源。
2
Two desktop-printer engineers quit their jobs to search for the ultimate source of endless energy: nuclear fusion. Could this highly improbable enterprise actually succeed?
两位桌面印刷工程师放下手中的活去研究核聚变这种取之不尽的最终能源，这项看来异想天开的事儿能成功吗？
3
The ultimate goal of course is to add more and more moments of receiving energy in; so you feel full, whole and complete rather than half empty, drained and depleted.