Level III are retrospective comparative studies or case-controlled studies.

II I级研究是回顾性的比较研究或者病例对照研究。

youdao

What level or levels of intellectual behavior are we at with this Comparative Education Forum?

比较教育研讨会是在哪一级求知行为上？

youdao

This book is perfect for introductory level courses in computational methods for comparative and functional genomics.

这本书为比较和功能遗传学对于引导水准计算方法课完美。

youdao

The company reported higher revenues, but lower orders and profits for several of its sectors due to impairment charges and a higher comparative level in 2010.

FORBES: Siemens Reports Profit Growth, Cites Euro Worries

Between them, the two symbolize, perhaps better than words can describe, the comparative level of architectural technology, the comparative level of craftsmanship and the comparative level of affluence and sophistication the two cultures had attained at that epoch of history.

CENTERFORSECURITYPOLICY: Center For Security Policy

Modernizing agriculture will ensure that regardless of the weather pattern, we will still be able to produce food at a level that satisfies global demand and take advantage of our comparative advantage to increase our revenues by diversifying our markets globally.

FORBES: Global Warming And Africa's Future: Part 2