Sentence examples for impermeable frontiers from inspiring English sources

We conclude that highly monumentalized landscapes emerged in areas where local groups chose not to interact with the Tupi-Guarani, showing that funerary monuments were an important component in the establishment of impermeable frontiers to resist outsiders.

Big corporations have developed morally impermeable skins.

His team, so impermeable before, were punctured.

An impermeable police hierarchy is another problem.

Outside, there was only the desert — huge, an impermeable membrane.

"I needed to feel like a fortress, impermeable," she writes.

BlackRock Frontiers Investment Trust Formed a year ago.

Frontiers sells similar packages (frontierstravel.com).

And the magic crosses frontiers.

The frontiers are disappearing.

Frontiers of Human Neuroscience.