dross
/drɔs; ?@ drɔ:s; drɔs/ n[U]
(a) scum of waste matter on melted metals 浮渣（浮在熔化的金属上的废物）.
(b) (fig 比喻) least valuable, attractive, etc part of sth 无价值、 无吸引力之处
The best players go off to the big clubs, leaving us the dross. 最好的队员都投奔大俱乐部去了, 就只给我们剩下些不中用的人.