每日雅思词汇：double 的短语搭配　　遥剑 double-edged sword 　　双向选择 two-way selection 　　双重标准 double standards 　　遥制 double-track system 　　双向收费 two-way charge system 　　双学位 double degree 　　双赢局面 win-win situation 　　双职工 working couple 　　双眼皮 double eyelid