ebb
verb [ I ] uk/eb/ us/eb/
(WATER)
落潮，退潮
When the sea or tide ebbs, it moves away from the coast and falls to a lower level.
(FEELING)
衰退；逐渐减少；衰竭
If a physical or emotional feeling ebbs, it becomes less strong or disappears.
He could feel his strength ebbing (away). 他能感觉到自己逐渐体力不支。
ebb
noun uk/eb/ us/eb/
the ebb 落潮，退潮
the tide when it is moving away from the coast
We'll sail on the ebb. 我们将在退潮时启航。
Idioms
at a low ebbidiom 处于低潮；处于衰退状态
in a bad or weak state
Consumer confidence is currently at a low ebb. 目前人们对消费的信心降到了低谷。
I was recently divorced and feeling at a very low ebb. 我刚离了婚，情绪非常低落。
ebb and flowidiom （有规律的）涨落，起伏
the way in which the level of something regularly becomes higher or lower in a situation
You have to accept the ebb and flow of love in a relationship. 你得承受恋爱过程中爱情的起起伏伏。