1. 视地平：visible cloud image 可见光云图 | visible horizon 视地平 | visible radiation 可见光

2. 可见地平：visibility of interference fringes 干涉条纹可见度 | visible horizon 可见地平 | visible image 可见象

3. 视地平线：视地平线 apparent horizon | 视地平线 visible horizon | 视电阻率 apparent resistivity

4. 可见地平,可见水平：visible frequency generator == 视频振荡器 | visible horizon == 可见地平,可见水平 | visible image == 可见象

noun

1. the line at which the sky and Earth appear to meet

Synonym: horizonapparent horizonsensible horizonskyline