/ˈmɜ:kjəri ||; ˈmɝkjərɪ/noun [sing] the planet that is nearest to the sun 水星（距离太阳最近） ☞picture at the solar system 见the solar system插图
mercury²
/ˈmɜ:kjəri ||; ˈmɝkjərɪ/noun [U] (symbol Hg) a heavy silver-coloured metal that is usually in liquid form. Mercury is used in instruments that measure temperature (thermometers). 汞，水银（用于温度计）