兴衰，起伏；潮的涨落

ebb and flow───兴衰，起伏；潮的涨落

hearts and flowers───多愁善感

highs and lows───高价与低价

bits and bobs───零碎的东西（非正式）

blood flows───血液流

bow and arrows───弓和箭；弧矢

less and less───越来越少；越来越少的

The sun's activity usually ebbs and flows on a fairly predictable cycle.───太阳的活动通常在一个还算规则的周期内上下浮动。

It ebbs and flows, launches new adventures then soon loses interest.───它时消时涨，发起了一轮轮新冒险，然后很快就失去兴趣。

Industrial work has its ebbs and flows.───工业工作有它的潮起潮落。

To be fair, these numbers are something of a snapshot, as the profitability of a given industry ebbs and flows with the overall economy.───公平地说，这些数字只能给出一个简单印象，一个行业的盈利会随着整体经济的变化而有所涨落。

It has no front line but ebbs and flows through the countryside like an ocean's tide.───战争没有前钱，就像海洋中的浪潮在全国时起时落。

For anyone attempting to understand the ebbs and flows of international politics, I offer a variant of that old line: "Follow the oil" .───对于试图了解国际政治潮流动向的人，我的建议是那句老台词的改编版：“跟踪石油的走向”。

Despite their ebbs and flows, the currents of history have decisively moved in a single direction, he said.───他说，历史的潮流有涨有落，但毫无疑问朝着一个方向前进。

For some of us, these ebbs and flows may happen at certain times of the day, for others it may be completely random.───对一些人而言这种消长的发生时间固定，而另一些却完全随机发生。

Like the seasons and the tides, the body (which is 90% fluid) has its own ebbs and flows.───就像四季及潮汐，身体（有百分之九十是水份）也有它自己的涨退周期。

The music often has ethnic undertones, and it ebbs and flows with great subtlety.

The strength or weakness of the dollar dominates the ebbs and flows of world rates of currency exchange.