ebb and flow

基本解釋

I guess it’s a continual ebb and flow, being stuck and then moving again.
我猜這是一段起起伏伏，一會(huì)兒陷入困境，然后又重新啟程的旅途。
Your hormones are in full force and your moods will ebb and flow like the tides as levels of estrogen and progesterone skyrocket and then drop in regular cycles.
你的激素正充分發(fā)揮效力，你的情緒會(huì)隨著雌性激素和黃體酮含量猛漲的或降低到正常水平而上下起伏。
The upshot is that the Blei-Gerrish method may get closer to the real ebb and flow of scientific ideas and thus, in its way, offer a more scientific approach to science.
結(jié)果就是布雷-蓋里奇之法會(huì)更加接近真實(shí)的科學(xué)觀點(diǎn)的興衰，也因此，以其自身獨(dú)特的方式，為科學(xué)提供更加科學(xué)的方法。

But tides are the ebb and flow of saltwater against the coast.
But just how does that kind of knowledge help us deal with the constant ebb and flow of political life?
但那種知識(shí),如何協(xié)助,我們面對政治生活中的,恒存起伏？
耶魯公開課 - 政治哲學(xué)導(dǎo)論課程節(jié)選
The track "Ebb and Flow." featuring Tia's friend and mentor Christian McBride on bass, taps into her philosophical nature.

The cycle of businesses starting and businesses ending is a natural ebb and flow.
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the way in which the level of something regularly becomes higher or lower in a situation

興衰
The Late Qing Dynasty Navy construction processes and its ebb and flow are always an important subject of the modern Chinese history research.
晚清海軍的建設(shè)過程及其興衰起伏,一直都是中國近代史研究領(lǐng)域的重要課題。