vi.(指潮水)退;跌落;减少;衰落;
n.退潮;落潮;衰退;减少;
例句:
I have to confess that here my optimism begins to ebb.
我必须承认,我的乐观自此开始消退.
They swam till the tide began to ebb.
他们一直游到开始退潮.
The Government's popularity is at its lowest ebb.
政府的支持率跌到了最低点。