Earth and environmental sciences （地球和环境科学）：只为按时到达展会。140 +2 1： 点仪器高为l？
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Earth & Environmental Science 地球与环境科学 ; 地球和环境科学 Earth and Environmental Science 地球环境科学 ; 地球和环境科学 ..
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地球、大气和环境科学 Earth, Atmospheric and Environmental Sciences
环保机构地球观察研究院经营可以亲自参与的项目，他们将观光客和研究动物和环境的科学家组成一队。
The Earthwatch Institute, an environmental organization, runs hands-on programs, teaming tourists with research scientists studying animals and the environment.
就有限的地球而论，对科学家们的最重大挑战，或许是涉及能源使用和其对生活环境冲击的问题。
On the "limited earth," perhaps the most important challenges for scientists are problems related to the use of energy and the impact on our living environment.
科学家还希望通过该实验找出适合在严酷环境下生长的土豆种类，来帮助解决地球人口饥饿和营养不良的难题。
The scientists hope the experiment will also help address the earthly scourges of hunger and malnutrition by identifying varieties suited to growing in harsh conditions.
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