The unemployment rates that Keyssar calculates appear to be relatively modest,at least by Great Depression standards: during the worst years, in the 1870’s and 1890’s,unemployment wasaround 15 percent. 句子的主干是rates appear to be modest。 that Keyssar calculates 这一部分是rates的定语从句,来修饰rates;at least by Great Depression standards是句子的状语,意思是说“至少通过大萧条时期的标准来判断是modest的”,by...standards是以....标准的意思;冒号之前就是一个完整的句子了,从冒号开始是对之前句子内容的解释,说“在1870’s和1890’s这些最苦逼的岁月里,失业率差不多在15%左右”。 清楚了?-- by 会员 jeffery2541 (2012/7/17 22:39:36)
嗯呐,谢谢jeffery哈,自己总是把by的那部分想错,又查了一下字典,by的用法,明白了 |