今日长难句：
Some great manufactures and great service companies may have become too lean in their relentless drive to reduce costs, outsourcing not just their non-core activities but essential ones too.
参考译文：
有些大的制造商和服务供应商在不懈地降低成本方面变得太过精干了，不仅把非核心业务外包，而且连核心业务也外包。
句子解析：
【核心词汇】
manufacture n.制造商，厂商
lean v.倾斜，倾向 a.瘦的
drive n.内驱力，推动力
outsource v.外包
essential a.基本的;必要的
【结构分析】
逗号前面是主句，句末的现在分词短语做伴随状语，进一步补充说明reduce costs的具体内容。
下期预告：
He asserted, also, that his power to follow a long and purely abstract train of thought was very limited, for which reason he felt certain that he never could have succeeded with mathematics.
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