【句子对照】 Chris came from the wrong side of the tracks, but eventually he became a millionaire. 克里斯来自一个城镇的贫困地区，但他最终成了百万富翁。 【关键俚语】 Wrong side of the tracks 英：The poor part of town. 中：住在（城镇等中的）社会地位低...
