It's the first study to trace the fluctuation of a natural (not human-caused) aerosol around the globe over the course of a century.
这是第一个试图勘测整个世纪地球表面自然(非人造)环境中悬浮颗粒的研究。
2
The transformation course from latent human capital to actual human capital bears uncertainty and fluctuation, which is influenced by many factors.
该转化过程具有不确定性和波动性，受多种因素的影响。
3
The growth course of the real estate is not the steady growth course, but the growth of the fluctuation, especially demonstrate the characteristic periodicallying increasing.