last frontier造句怎么写

People are going to space in pursuit of the last frontier or seeking in the depths of science for new knowledge.

There was a time when fishermen were seen as the last hunter-gatherers-pitting their wits against the elements by pursuing their quarry on the last frontier on Earth. Those days are gone.

If the human body is the last frontier for advertising space, then St. Louis resident Asia Francis is helping chart new territory— the big, pregnant belly.

Julia: Science is the last frontier.

Arguably more significant than the petroleum bonanza are the massive capital inflows Africa can continue to expect as the last frontier market.