n an arctic atmospheric condition with clouds over snow produce a uniform whiteness and objects are difficult to see; occurs when the light reflected off the snow equals the light coming through the clouds
v cover up with a liquid correction fluid
v lose daylight visibility in heavy fog, snow, or rain
n. [气]乳白天空(极地的一种大气光象),因暴露于恶劣环境而引起的临时性失明