带电物体有向空间交换带电和不带电的微粒子以达到其中性状态的性质。
The charged objects are of properties exchanging charged or uncharged particles in order to achieve the state of nature.
空间可以向球面一样有正的曲率，也可以像马鞍面一样有负的曲率。
Space can have positive curvature, like the surface of a sphere, or negative curvature, like the surface of a saddle.
更多的人对能源，特别是绿色技术感兴趣，这些领域有很大的增长空间，特别是在向新兴市场引入新技术方面。
A larger number are interested in energy, particularly in the space of green technology — there's a lot of room for growth, particularly in introducing new technologies in an emerging market.
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