She couldn't afford the fashionable clothes of the period-so she rejected them and made her own,using, say, the sports jackets and ties that were everyday male attire around the racetrack, where she was climbing her first social ladders.
我要背诵这句话,但是不了解一些词的意思。
using是什么成分,为什么可以插入在这里?racktrack解释称赛马场解释不通啊?这句话的using,后面怎么翻译呢?