n. a gradual decline (in size or strength or power or number)
n. the outward flow of the tide
v. flow back or recede
n. 退潮, 衰退
vi. 潮退, 衰退
1. The tide will ebb in the evening.
潮水将在晚上退去。
2. As the day went on, her energy began to ebb.
随着一天的过去，她的精力开始减退。
3. We must be careful not to let our enthusiasm ebb away.
我们必须小心，不让我们的热情消退。