exposure

n.

1. 暴露, 显露
   • After only a short exposure to sunlight he began to turn red.
     他在阳光下只晒了一会儿, 皮肤就开始变红了。
2. 揭发, 揭露
   • I threatened them with public exposure.
     我扬言要公开揭发他们。
3. (软片等)曝光
   • An exposure of one-hundredth of a second will be enough.
     曝光百分之一秒就够了。