n.轻量级拳击手（体重在57至61公斤之间）( lightweight的名词复数 )，体重低于通常重量的人，比通常重量轻的东西，无足轻重的人[事]...

Most of them have been political lightweights.他们中多数都是政治庸才.The euro zone's finance ministers are political lightweights with no sense of leadership.欧元区的财长往往都是政治上的轻量级人物,没什么领袖感....

lightweights的音标：...