They noted that the African Union has in the past approved an important convention, only to see it lie dormant for lack of ratification.

VOA: standard.2009.10.23

it'd become kind of dormant.

它已经有一些萎靡不振。

重建社团小组 - SpeakingMax英语口语达人

"Because there are only a couple of previous records of eruption at this particular volcano, it is difficult to judge either how long the activity will go on there, or how long the volcano might then be dormant before it goes active again."

VOA: standard.2010.04.15