Three very large volcanoes are found on the Tharsis bulge, an enormous geologic area near Mars's equator.
在塔尔西斯高原上发现了三座非常大的火山。塔尔西斯高原是火星赤道附近一片广阔的地质区域。
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The researchers examined data collected from microlensing surveys of what is called the Galactic Bulge, the central area of our own Milky Way.
研究人员分析了从星系核球——即银河系的中心区域——搜集的微重力透镜研究数据。
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The bulge of our spherical Earth blocks sunlight from the far hemisphere at the solstices; that same curvature allows the sun's rays to spread over more area near the top and bottom of the globe.