"That takes a long time to build," Mr. Ceipek said of the analytical materials that firms like LexisNexis have either bought or developed over the years. "it's very difficult to catch up."
“取得这些资料需要很长时间，”希佩克先生提及像LexisNexis这样的公司购买或经过多年开发取得的分析资料时说，“要赶上我们是非常困难的。”
A little critical, analytical thinking is a good thing. Without doubting ourselves sometimes we'd find it difficult to make good decisions.
有一些批判性、分析性思维是一件好事。有时候，不自我怀疑的话，我们就很难做出好的决定。
However, the failure parameter of the generator follows the Gauss distribution, therefore, the analytical study of its reliability is difficult to carry on with the common analytical method.
但是发电机的失效参数为正态分布，因此，其可靠性的分析研究，用一般的解析方法是困难的。
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