Although some might think a snake would be a difficult target, it is not.
Flying without lights, racing across the rooftops, the Black Hawks make a difficult target.
It's a difficult target for internationally sourced cars and trucks to reach.
Two Canadians, Rhoda Habert and Marshall Lewis, sitting North-South, hit this difficult target with the diagramed auction.
Nuclear plants are built so robustly that they would seem to present a difficult target for terrorists.
"Iran poses a very difficult target set," said one former top officer who was involved in target planning.
As Ray Flaherty, the Redskins' coach, said, "His size and speed made him a difficult target, particularly on defense".
Yet such demands are a difficult target for even the most diligent governor (equivalent to a mayor).
Some upstate Democratic leaders began floating Kennedy's name as a prospective opponent to Keating, who was a difficult target for Democrats.
At least one trial involving a DNA-based vaccine for H.I.V. — a far more difficult target — failed to show a benefit.
But no one in authority treated the new forecast as anything but the most responsible possible stab at a notoriously difficult target: the long-range economic outlook.
