Mars

1. N the Roman god of war, the father of Romulus and Remus 馬耳斯; 羅馬戰(zhàn)神，羅姆拉斯和雷姆斯之父 (Greek counterpart Ares)

N

1. N the fourth planet from the sun, having a reddish-orange surface with numerous dark patches and two white polar caps. It has a thin atmosphere, mainly carbon dioxide, and low surface temperatures. Spacecraft encounters have revealed a history of volcanic activity and running surface water. The planet has two tiny satellites, Phobos and Deimos. Mean distance from sun: 228 million km; period of revolution around sun: 686.98 days; period of axial rotation: 24.6225 hours; diameter and mass: 53.2 and 10.7 per cent that of earth respectively 火星 (Also called the Red Planet)