In combat, heat exhaustion and associated problems are expected to severely challenge American forces.

First, it severely challenges my competence in the area.

He opened up a two-length lead over the ninth jump and was never severely challenged after that.

Even so, entropic gravity in its current form has been severely challenged on formal grounds.

Whoever it is is not expected to be severely challenged on the third day in the Pyrenees.

Plant life in the Mesozoic must have been severely challenged by the arrival of very large dinosaurs.

It was a prosperity that was severely challenged by the arrival of the Vikings.

We felt the integrity was severely challenged with demolition of the Admiral Hotel.

The results of any observing system will surely be severely challenged because of the enormous political, financial, economic and emotional stakes involved.

The pact was severely challenged by the Japanese invasion of Manchuria in 1931.