Sentence examples for difficult task to collect from inspiring English sources

It is quite a difficult task to collect reliable statistics on favelas' areas.

"Jackson had a very difficult task to accomplish," Mr. Foster said.

"It's a difficult task to increase your audience.

Forecasting water breakthrough is a difficult task to be performed for naturally fractured reservoirs.

But it is difficult task to attract and retain sponsors.

This would be a difficult task to achieve.

"There will be difficult tasks to come," Merkel acknowledged Friday.

For video annotation tasks, it is often expensive and difficult to collect sufficient labeled videos to build an effective classifier.

Hard evidence on this is difficult to collect.

Domestic debt can also be more difficult to collect.

The task was to collect multiple examples of a genre of postcard.