"I am at a loss to explain what happened," he said.

Officials were at a loss to explain the 23 percent increase yesterday.

Looking back over three decades he's at a loss to explain the move.

For the third time in recent days, I was at a loss to explain.

The Pentagon was at a loss to explain what went wrong.

But they're at a loss to explain how the children are involved.

Something Jeffrey was at a loss to explain, much less understand.

Western diplomats seem at a loss to explain China's hard line.

He had gotten to her in some way she was at a loss to explain.

Art seemed to be at a loss to explain it.