请描述一下火星的大气组成，以json格式回答，格式如下：
    "atmosphere_composition": {
        "major_constituent": "...",
        "other_constituents": [...],
        "surface_pressure": "..."
    }
|
{
    "atmosphere_composition": {
        "major_constituent": "二氧化碳",
        "other_constituents": ["氮气", "氩气", "氧气", "一氧化碳", "水蒸气", "氖气", "氮氧化物", "甲烷"],
        "surface_pressure": "约610帕"
    }
}
user
{
    "atmosphere_composition": {
        "major_constituent": "二氧化碳",
        "other_constituents": ["氮气", "氩气", "氧气", "一氧化碳", "水蒸气", "氖气", "氮氧化物", "甲烷"],
        "surface_pressure": "约610帕"
    }
}
assistant