N
a dimming or reduction in the use of electric lights in a city, esp to conserve electric power or as a defensive precaution in wartime (尤指为节约电力或作为战时防御措施的)城市灯火管制
Right here on the flight line in crash landings, the helicopters landing in what are called brown-out conditions, meaning the dust on the desert floor rises up and engulfs the helicopter and it is very difficult for the pilot to see the ground in those conditions and very easy to mess up the landing.
As the Suwanee Quintet sang gospel tunes, Brown -- decked out in a black leather jacket with stars and stripes down the sleeves -- grabbed the microphone and added his signature screech to applause from the crowd.
Available in several colors--including Dragon Jacquard, Burnt Adobe and Roasted Brown--it means college students can now rock out to their favorite tunes as they make their way across campus.