英语翻译That explained a lot:the insecurity of living on the low

英语翻译
That explained a lot:the insecurity of living on the lower slopes of the long hill,between the smoldering steeples of Boston and the clean,high-priced air of Belmont.
好像跟某人的背景有关……完全不能理解= =
OG 420页的一篇
但是他哪里说这句是比喻了……虽然出了说是比喻其他的根本没法解释
3L IP地址也是武汉的？同为考生还是老师？