It was a cumbersome state, with fluctuating levels of territorial control.

这是一个过于庞大的国家，领土面积不断波动。

It's also one he regards with a fluctuating level of irritation.

这也是一部他以阴晴不定心情看待的作品。

In NIO (National Institute of Oceanography), we generated the records of the last 15,000 years of how sea level has fluctuated.

在 NIO（国家海洋学研究所），我们生成了过去 15, 000 年海平面波动的记录。

Suicide rates vary for many reasons, so the two researchers concentrated on correlating day-to-day changes in the number of suicides in particular places with fluctuating air-pollution levels caused by alterations in wind direction.

自杀率因多种原因而不同，因此两位研究人员专注于将特定地点自杀人数的日常变化与风向变化引起的空气污染水平波动联系起来。