Why have there been no major exploratory expeditions for the past fifteen years?

She can do that as the former commander of our exploratory expedition.

Evidently many hundreds of years ago an exploratory expedition had come upon some unique natural phenomenon here at a far end of the universe.

It was an insane time to try to put together an exploratory expedition.

The study also considered the possibility of exploratory mid-winter expeditions across the polar ice cap.

It was an exploratory expedition not equipped for a serious attempt to climb the mountain.

Commerce and exploratory expeditions quietly resumed in peace after the signing of the treaty.

Some men left on military campaigns, exploratory expeditions, or colonization efforts.

Other, largest exploratory expeditions took place in 1935 and 1936 as well as between 1955 and 1968.

In 1890 he went to Guinea to report on an exploratory expedition.