11.   His unit is using Department of Public Works maps of areas that where vegetation was recently burned off in controlled fires to identify the areas most vulnerable to mudslides.

12.   If she is truly their child, she will do more than run with controlled fire and give herself to the Olympian dream.

13.   In fact, controlled fires go back to the time American Indians used it to raze woods for planting or clear out brush for easier hunting.

14.   It recommends the cutting of most old trees, removing vegetation from the base of large trees and allowing more controlled fires.

15.   It is all too easy to forget to drink amid the power and fury of even a small controlled fire.

16.   Officials hope to use custom-designed logging and controlled fire to more closely mimic the frequent light burns once common in many forests.

17.   Officials say that the volunteers are well supervised and trained and that their controlled fires and limited use of weak herbicides are safe.

18.   One central question is whether the government should be more willing to start controlled fires, to burn off built-up fuels.

19.   Some landowners may be offered financial incentives to replant native grasses or to revitalize surviving prairies with controlled fires.

20.   The contractors would set controlled fires, control erosion and remove timber, with the proceeds of the timber sales helping to pay for the other work.

a. + fire >>共 1030
anti-aircraft 6.12%
machine-gun 6.10%
heavy 4.48%
small 3.83%
israeli 3.11%
open 2.54%
opened 2.11%
hostile 2.00%
enemy 1.91%
opening 1.72%
controlled 0.35%
controlled + n. >>共 474
explosion 10.35%
study 3.95%
trial 3.43%
environment 3.10%
condition 2.33%
drug 2.26%
burn 2.13%
area 2.07%
fire 1.88%
experiment 1.75%
每页显示:    共 29