visibility /ˌvɪzəˈbɪləti/ noun Learner's definition of VISIBILITY
[noncount]
1
: the ability to see or be seen可见度；明显性 —
used especially to describe how far you are able to see because of weather conditions, darkness, etc.（尤指受天气状况、明暗程度等影响的）视程，能见度 -
It was a clear day with good visibility. [=a day when you could see a long distance because the air was clear]那天是个晴天，能见度很好。
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flying/driving under conditions of poor/low/reduced visibility在能见度差/低/减弱的条件下飞行/驾驶
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The fog was very heavy and visibility was down to a few feet.雾很浓，能见度降至几英尺。
2
: the quality or state of being known to the public关注度；知名度