Sentence examples for a main problem is from inspiring English sources

A main problem is the lack of a discernible end to the spreading protests.

A main problem is, however, the lack of experimental data in the literature.

It is iterative and a main problem is solved each iteration.

A main problem is bubble formation in microelectrodes which has an impact on the electrical properties of the electrode and thus it influences the quality of the recording.

In science education, a main problem is overcoming false preconceptions and naive beliefs.

A main problem is the absence of a 'gold standard' against which to compare indicators.

"Everybody Hates Chris" is the first show in a long time centered on a teenager whose main problem is not adolescent angst, but real life.

Second, it adds a new source of financing to a system whose main problem is unsustainability due to cost.

If a drug's main problem is that it's toxic to off-target organs, then nanotechnology can ensure that it's delivered to diseased cells instead of healthy cells.

Other economists said Mr. Feldstein's concern about an asset-price bubble seemed out of place when discussing an economy whose main problem is declining prices and demand.

(IDI with a community representative) The main problem is that the current system used by the district is not good.