Sentence examples for been difficult to estimate from inspiring English sources

The scale of e-waste exported to Asia has previously been difficult to estimate.

In Algeria, the incidence of hematologic malignancies has been difficult to estimate for many years.

These incentives have long been understood, but the validity of government data has been difficult to estimate in the absence of viable external estimates.

Moving from an economic to a quality focus The early assumption was that partnership working was all about being cost-effective, but in reality the costs were rarely calculated and the benefits have been difficult to estimate.

Leaf area index (LAI) has traditionally been difficult to estimate accurately at the landscape scale, especially in heterogeneous vegetation with a range in LAI, but remains an important parameter for many ecological models.

Teeth and skeletons offer many clues to how they lived, but their swimming speeds have been difficult to estimate.

However, surface roughness is difficult to estimate in unstructured environments.

The size of the crowd was difficult to estimate.

He said it was difficult to estimate how many individual soldiers might have been involved.

It is difficult to estimate the social costs of needlessly high rates of imprisonment.

Analysts said it was difficult to estimate their value because so much real estate was involved.