Sentence examples for proved unstable from inspiring English sources

But even these muted successes proved unstable.

However, some systems are proved unstable under traditional assumptions.

Other semiconducting materials have been tested as water-splitting catalysts but have proved unstable.

In part, his image has proved unstable simply because the historical record is so weak.

Central authority proved unstable in the capital city of Buenos Aires.

But the soil proved unstable, and the crew decided to dig 20 inches deeper.

Some analysts say the coalition of former ideological rivals could prove unstable and short-lived.

We have built cities and economies on assumptions about the seasons that may prove unstable.

The broad political support for Mr Duhalde is deceptive, and may prove unstable.

Both regimes rest on highly personalised rule that looks secure but may yet prove unstable.

If this proves unstable, Mr Gauck would become the first post-war president to call a new election.