Sentence examples for proved unsustainable from inspiring English sources

But it proved unsustainable.

But telephone competition proved unsustainable.

But the progress proved unsustainable.

Large, rigid welfare states proved unsustainable.

This pledge has proved unsustainable for decades.

At first, local foresters provided seedlings, but this proved unsustainable.

From that perspective it may prove unsustainable.

The Singapore model may prove unsustainable even in Singapore.

Ultimately the expansion proves unsustainable as investment returns fall.

Continuous cropping (CC) with conventional tillage (CT) has proven unsustainable due to decreased soil productivity.

In an economy in which inflation has been held down, that would always eventually prove unsustainable.