Method: The case analysis of difficulty about delivering head of foetus in new type of caesarean operation (form Sep. 1999 to Sep. 2003).

方法：1999年9月至2003年9月新式剖宫产胎头娩出困难病例分析。

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In pilot and field studies, test takers took both the existing TOEIC test and the new test. Statistical analysis of the results confirmed that the difficulty level of the two tests was equivalent.

在试验研究中，考生同时参加了现行托业考试和新托业考试，考试结果的数据分析表明两个考试的难度是相同的。

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The analysis showed that the wet component which comprise of 10% of troposphere delay varies quickly in temporal and space and is a studying difficulty of troposphere delay.

分析表明对流层延迟的湿分量在时间和空间上变化较快，占对流层延迟量10%左右的湿分量是研究的难点。

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Today we will address two enduring barriers to progress toward higher levels of IT maturity, the fear of performing an analysis and the difficulty of convincing others to join the party.

FORBES: Why CIOs Fail at Increasing Awareness Through Enterprise Architecture

But the audit is reportedly not going to include a cost-benefit analysis, owing to the difficulty of quantifying such aspects of EU membership as foreign affairs influence.

BBC: William Hague launches full 'audit' of EU law and the UK