an occasion when the sun disappears from view, either completely or partly, while the moon is moving between it and the earth, or when the moon becomes darker while the shadow of the earth moves over it

a solar/lunar eclipse 日／月食

On Wednesday there will be a total/partial eclipse of the sun. 周三将有一次日全／偏食。

a situation in which something becomes less important

The eclipse of the ruling political party was inevitable. 执政党大势已去，无可挽回。

His remarkable contribution to literature has been too long in eclipse. 他对文学的杰出贡献已被人们遗忘太久了。

to make an eclipse of the moon or sun

The moon will be totally eclipsed at 12.10 p.m. 晚上12点10分会出现月全食。

to make another person or thing seem much less important, good, or famous

The economy has eclipsed all other issues during this election campaign. 这次大选期间，经济问题成为压倒一切的重大议题。