火星快车 huǒxīngkuàichē Mars Express Origin Definitions Defs Strokes Stroke Words Sentences Sents 火星 huǒxīng nounproper noun Mars The fourth planet from the sun in our solar system; formerly known as 荧惑 yínghuò in ancient China.快车 快車 kuàichē proper noun express express train, bus, or other public transportation that makes few stops and travels at high speeds