occultation

名词

1. 1

   掩星、星蚀天文

   Astronomers recorded the occultation of a bright star by the moon.

   天文学家记录了月球遮掩一颗亮星的掩星现象。

2. 2

   遮蔽、隐没正式

   The occultation of the sun by thick clouds darkened the valley.

   太阳被厚云遮蔽，整座山谷暗了下来。