根据本工程实例情况，人工挖孔桩桩底标贯试验是非常必要的。

The standard penetration test(SPT)of base-pile of the artificial bored pile is very essential according to the feature of this project.

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根据评级机构标准普尔（标普），到10月底截至的过去一年中，美国垃圾债券的违约率只有2.9％。

Over the year to the end of October, only 2.9% of American junk bonds had defaulted, according to Standard &Poor’s (S&P), a rating agency.

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美国股市9月底似乎也朝着那个水位走了，但是在标普500指数跌破了1120点之后又反弹了。

The U.S. market looked as if it were headed to those levels in late September, but it bounced after breaking below 1, 120 on the Standard &Poor's 500 Index ($INX 0.00%).

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