Sentence examples for principal problem is from inspiring English sources

"The principal problem is our schools.

The principal problem is those working parents simply do not earn enough to escape poverty.

The principal problem is that almost all oceanic crust older than about 200 million years has been obliterated by subduction.

The principal problem is that it doesn't have the bandwidth to process a lot of current high-quality downlink material from surveillance aircraft.

The principal problem is TCA, or 2,4,6-trichloro anisole, a moldy-smelling compound caused by the action of chlorine on cork bark in a cleaning process.

"Pemex's principal problem is corruption, and that is not something that was brought even up in the government's diagnostic report," Mr. López Obrador said in the interview.

Indeed Huddersfield's principal problem was that, once they lost the ball, it was generally quite a while until they saw it again.

Biographers usually have their work cut out when it comes to fashion designers, the principal problem being that the clothes tend to be more reliably thrilling than the career, the sequins and seams a good deal less tedious than the shows and tantrums.

The principal problem was remuneration.

Another principal problem was the difficulty in establishing a density value as threshold for lesion detection as a result of partial volume effects and motion artefacts.

One of the principal problems is connected with the recognition of work pieces and detection of their positions.