tipster/ˈtɪp.stɚ/名词(尤指兜售比赛可能获胜者预测信息的)胜率预测者;(尤指向政府机构告发犯罪者的)举报者,告密者All the tipsters were wrong about the gold medal winner.所有的胜率预测者都弄错了金牌得主。想跟读,去练习