镀金

dùjīn

(1) [water-gild]∶附金于[金属表面], 其法是先用金汞薄薄地镀上一层, 随后加热使汞挥发

(2) [gold-plate]∶用金来电镀

(3) [get gilded; formerly said of students who went abroad to study in order to enhance their social status]∶比喻为虚名而到某地进行所谓的深造或锻炼