Sentence examples for this is a difficult mission from inspiring English sources

This is a difficult mission," Mr Obama said.

It is draining, and that is what I mean when I say this is a difficult mission".

"Make no mistake: this is a difficult mission," Obama said.

With the bridge so close, and all the fragments in the water, this was a difficult mission.

Detecting the start and stop positions of dynamic ranges is a difficult mission; thus, this algorithm cannot be suitable for various histogram types.

It is a difficult mission, even for the 4,000 troops from the Spartan Brigade, officially the Second Brigade of the Third Infantry Division, who led the assault into the center of Baghdad and have now been given the mission of securing Falluja.

Accurate prediction of DNA motifs that are targets of RNA polymerases, sigma factors and transcription factors (TFs) in prokaryotes is a difficult mission mainly due to as yet undiscovered features in DNA sequences or structures in promoter regions.

"I have no illusions because, based on past experiences, this will be a difficult mission to be achieved.

It's a difficult mission.

"It's a difficult mission, but we try," Ms. Latif said.

The leader of the opposition acknowledged that it will be a "difficult mission" which "will take time".