Another global health priority you identified was the link between our health and the environment we live in, from the water we drink, to the air we breathe, to the food we grow and eat.

你确定的另一项全球卫生重点是我们的健康与我们生活的环境之间的联系，从我们饮用的水到我们呼吸的空气，到我们种植和食用的粮食。

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The leaves, through a chemical process called photosynthesis, make food so the tree can live and grow.

树叶通过光合作用这个化学过程制造食物，于是，树能得以存活和生长。

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These activities could include demonstrations of new robots, inflatable modules in which to live or grow food ("greenhouses"), new life-support technologies, radiation protection systems, communications and sensor technologies, novel telemedicine approaches - anything that would be needed by astronauts on a self-sufficient mission far from Earth.

BBC: Manned flight around Moon considered