ebb¹/ɛb; eb/ n 1 also 又作 ebb tide [singular 单数] the flow of the sea away from the land, when the TIDE goes out 落潮，退潮 2 be at low ebb to be in a bad state 衰退，不景气: By March 1933, the economy was at its lowest ebb. 至1933 年 3 月，经济状况已处于最低潮。 3 ebb and flow when something increases and decreases in a regular pattern 〔有规律的〕涨落，盛衰: the ebb and flow of consumer demand 消费者需求的涨落 → opposite 反义词 FLOW¹