That question is under study, too.

这个问题也有待研究。

The plan is under study.

那个计划正在研究中。

It is one of the phenomena under study.

它是该研究中的现象之一。

The significance of the news is still under study.

人们还在对这一新闻的意义进行研究。

It is important to note the kind of system under study.

注意所研究体系的类型是至关重要的。