这篇论文对浪漫主义时期的两首诗进行了比较研究。

The essay presents a ___comparative study of two poems from the Romantic period.

在一项比较研究中，我们看到日本的劳动力在增长，而美国的在下降。

In a ___comparative study, we see that the workforce is increasing in Japan but declining in the U.S.

她的论文包含对欧洲和亚洲市场的比较分析。

Her thesis involves a ___comparative analysis of European and Asian markets.