For instance on Mars, whose surface gravity is much less, the largest volcano, Olympus Mons, is 27 km (17 mi) high at its peak, a height that could not be maintained on Earth.
例如在火星上，其表面的引力比地球小得多，最高大的火山， 奧林帕斯山，其最高峰是24 km（15 mi），這是在地球上不能保持的高度。