hair trap造句

• The hair trap corral, one of three dozen in the area, had worked.
• Once the most effective combination is determined, the researchers will set up perhaps 500 or more hair traps in the Yellowstone ecosystem.
• When a person ingests a drug, each strand of his or her hair traps traces of the substance as it flows through the bloodstream.
• A team led by Katherine Kendall, an ecologist and bear researcher with the U . S . Geological Survey, designed hair traps that lured the elusive grizzlies with sweet-smelling liquid concoctions of rotten fish and cattle blood that had been brewed for weeks in warm 55-gallon barrels.
• For the last two years, in collaboration with the Wyoming Game and Fish Department, the wildlife service and other agencies, French has run a pilot study of hair trap corrals in Bridger-Teton and Shoshone National Forests and Yellowstone National Park, fine-tuning the locations used, scent, wire height and other factors.