ebb and flow
US /ˈɛb ənd ˈfloʊ/
UK /ˈɛb ənd ˈfloʊ/
1.
涨落, 起伏, 盛衰
the recurrent or rhythmical pattern of coming and going or decline and regrowth
:
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The ebb and flow of the tides is a natural phenomenon.
潮汐的涨落是一种自然现象。
•
Life has its own ebb and flow, with good times and bad.
生活有其自身的起伏，有顺境也有逆境。