I saw the ebb for the first time yesterday.

我昨天第一次看到了退潮。

The seawater is just beginning to ebb.

海水刚刚开始退潮。

The economic development of this country begins to ebb.

这个国家的经济发展开始衰退。

She sat in silence enjoying the ebb and flow of conversation.

她默默地坐在那儿 饶有兴致地听着时高时低的谈话声

Morale among teachers is at a low ebb.

教师的精神面貌不佳。

As night fell, our enthusiasm began to ebb away.

我们的热情随着夜晚的降临而渐渐低落下来。

She sat in silence enjoying the ebb and flow of conversation.

她默默地坐在那儿，饶有兴致地听着时高时低的谈话声。

The flood and ebb tides alternates with each other.

涨潮和落潮交替更迭。

The minister took up the theme and discoursed mellifluously on the ebb and flow of empires.

大臣接过话锋，滔滔不绝地谈论起帝国的盛衰兴亡。