61.   News helicopters are standard scenery in Phoenix skies, battling for airspace over tragedies, their high-tech eyes offering close-ups of carnage to television viewers.

62.   No one on the Awacs had told the fighter pilots that two U.S. helicopters had been in the area.

63.   Normally the helicopters are in radio communication with each other, but have very little communication with the base, he said.

64.   Officials say the Blackhawk and upgraded Huey helicopters are better for reaching high altitudes, where opium poppies are grown.

65.   One officer said the helicopter that crashed was an Army Black Hawk, the main heavily armed troop carrier for all Army forces.

66.   Other helicopters were not on the list because they went into the sea, he said, or were so damaged no one could determine why they crashed.

67.   Others had, and a helicopter was on its way.

68.   One survivor gave a thumbs-up sign as the helicopter was about to land at Patrick Air Force Base on the central Florida coast.

69.   Portillo said the Apache helicopters will be equipped with engines built by Rolls-Royce Plc of the U.K.

70.   Roads are poor and helicopters are necessary to reach the remote region.

n. + be >>共 1635
problem 0.82%
people 0.79%
company 0.71%
result 0.67%
thing 0.63%
report 0.57%
question 0.56%
official 0.55%
time 0.53%
issue 0.48%
helicopter 0.03%
helicopter + v. >>共 423
fly 10.78%
crash 7.17%
be 7.12%
hover 5.83%
take 4.77%
fire 4.68%
evacuate 2.74%
circle 2.45%
land 2.45%
drop 2.13%
每页显示:    共 421