It takes a powerful effort of will for him to enter.

But one person's efforts, however powerful that person, cannot bring about the change that has to come.

They spoke of a powerful effort, through all the colonies, to reinforce Lafayette and, bring the war to a conclusion.

Darlene, with a powerful effort, brought herself back under control.

But with a powerful effort he makes himself turn, pulls away, begins the homeward journey.

She felt as if she were falling down a deep well, and made a powerful effort of will to bring herself up sharp.

With smooth, powerful effort, he moved the pillars back into place.

In the first-half, he tipped over a powerful effort by Hall.

Monk made a powerful effort to control his temper.

"Lifting the embargo would be both smart policy and a powerful humanitarian effort."