Well for two reas mainly.

好，有两个理由。

The article puts forward methods and advices of geologic prospecting and relative designing for an economical and reas…

文章就如何经济合理地选定料场，提出了地质勘察及相关设计的工作方法及建议。

At last, the data mining application of the red tide forecast is analyzed, and it proves that the system application is scientific and reas.

最后通过对赤潮预测的数据挖掘应用分析，验证了系统应用的科学合理性。