Such an environment would have to contain the basic ingredients of life-including water, organic carbon and a source of energy to sustain the microbes' metabolism.
2
这样的火星环境也许包含了一些基本的生命要素——包括水,有机碳和维持微生物新陈代谢的能量源。
Such an environment would have to contain the basic ingredients of life — including water, organic carbon and a source of energy to sustain the microbes' metabolism.
3
相反,每天至少喝八杯水,也不含卡路里,但会让你觉得很饱,而且加速人体的新陈代谢。
Drinking at least eight glasses of water a day, in contrast, has no calories, makes you feel full, and boosts your metabolism.