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托福长难句分析：深海底部环境
Totally without light and subjected to intense pressures hundreds of times greater than at the Earth’s surface，the deep—ocean bottom is a hostile environment to humans，in some ways as forbidding and remote as the void of outer space.
(定语后置in some ways…)
由于完全没有光，而且承受着比在地球表面大数百倍的极大压力，深海底部对人类而言是一个充满敌意的环境，在某些方面就像外层空间一样险恶和遥远。
分句1：Totally without light and subjected to intense pressures
分句2：hundreds of times greater than at the Earth’s surface
分句3：the deep—ocean bottom is a hostile environment to humans
分句4：in some ways as forbidding and remote as the void of outer space
分句2修饰分句1结尾的短语intense pressures，
分句1是分句3的原因状语
分句3是整个长句子的主句
分句4是分句3的后置定语，修饰分句3的a hostile environment to humans
整个句子结构是：原因状语+主句+后置定语
这是主句前后分别有状语和定语的修饰成分，但是本句其实不是复合句。句子的核心意思是深海对于人类而言是一个充满敌意的环境。
托福长难句分析：核心业务外包
Some great manufacturers 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.
【结构分析】本句不难，逗号前为主句Some great manufacturers and great service companies may have become too lean in their relentless drive to reduce costs,使用了too…to…结构，句末的现在分词结构outsourcing not just their non-core activities but essential ones too作伴随状语，进一步补充说明reduce costs的具体内容。
【参考译文】有些大的制造商和服务供应商热衷于降低成本，不仅把非核心业务外包，而且连核心业务也不放过。
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