Sentence examples for main problems exist from inspiring English sources

One of main problems exist with regard to these commercial use of amylases is relatively low thermal and acid stability.

Two main problems however exist in assessing SM policies: "ethical" problems, related to the issue of measurability of some costs/benefits; practical problems, on how to perform such analysis.

Still, real problems exist.

Other problems exist as well.

acknowledging that such problems exist.

No such problems exist at Cornbury.

However, problems exist.

Problems exist everywhere.

But major problems exist.

But problems exist there, too.

However, several problems exist.