visibility
n[U]
1 fact or state of being visible 可見性; 明顯性.
2 condition of the light or weather for seeing things at a distance 可見度; 能見度
Visibility was down to 100 metres in the fog. 大霧中能見距離已降至100米.
planes grounded because of poor/low/bad visibility 因能見度太差[低/壞]而停飛的飛機.