Sentence examples for remain difficult to track from inspiring English sources

Yet with a more dispersed, looser, structure, jihadist terrorists remain difficult to track and can still pose a real and unpredictable threat, he said.

Although they are beginning to be better understood by the community, they remain difficult to track and to identify in the massive haystack of system logs and alerts.

It remains difficult to track sales of taxi-screen advertising.

His views of the West remain difficult to divine.

Methane and ethane remain difficult to convert by this route.

Many variants remain difficult to classify by traditional genetic methods.

The mechanisms leading to sensory restoration remain difficult to explain.

To this day the chain of events remain difficult to process.

Questions remain unanswered or factors remain difficult to measure.

Experiments on this subject remain difficult to interpret.

Despite this knowledge, inequalities remain difficult to shift.