mercury
noun [ U ] uk/ˈmɜː.kjə.ri/ us/ˈmɝː.kjə.ri/ (old use quicksilver)
(symbol Hg)汞，水银
a chemical element that is a heavy, silver-coloured metal, liquid at normal temperatures
Mercury is used in batteries, pesticides, and thermometers. 水银用于电池、杀虫剂与温度计中。