11.   Frightened families remained shuttered indoors, with insect repellent at the ready for anyone who needed to run essential errands.

12.   He also recommended that any visitors to mosquito-infested areas use insect repellents.

13.   Health officials recommend that kids outdoors after dark wear long pants, long-sleeve shirts and insect repellent.

14.   If flies bother you, use insect repellent.

15.   Insect repellents are a good idea for people who spend time outdoors, he said, especially if mosquitoes are around.

16.   Most insect repellents sold today rely on DEET or citronella, a natural plant-based oil, as their active ingredient.

17.   Neither the roasting pig nor any of the food displayed is edible because it has been sprayed with insect repellent to keep away the flies.

18.   Most commercial plant-based insect repellents, however, use the oil of citronella, a lemon-scented Asian grass now cultivated in the tropics worldwide.

19.   Neumann frequently leads travel medicine panels on children and insect repellents.

a. + repellent >>共 21
insect 60.87%
natural 7.25%
animal 2.90%
effective 2.90%
good 2.90%
american-made 1.45%
chemical 1.45%
citronella-based 1.45%
commercial 1.45%
common 1.45%
insect + n. >>共 172
pest 10.11%
bite 8.82%
repellent 7.72%
infestation 4.78%
larva 4.04%
damage 3.31%
species 3.31%
population 3.13%
life 2.57%
problem 2.02%
每页显示:    共 42