A system is the region of the universe under study.

Its growth was seen throughout the period under study, particularly the 19th century.

The first phase of that plan, which would cost $1.85 billion, is under study.

The proposed park has been under joint study by the two countries since 1972.

Usually they represent the best conditions within the region or area under study.

Whether it can stay even longer is still under study, he said.

The different alternatives for this project are still under study.

The specific cuts, under study for months, are expected to be made public in the next few weeks.

Whether it will remain in its present form is now under study by project officials and others.

I have had the manuscript under study for several months.