Equity's popularity waxed and waned over the next 300 years or so, soaring with the South Sea and Mississippi bubbles, then slumping, after both burst in 1720.

在之后的300年中，股票几度兴衰——随着南海和密西西比泡沫变得炙手可热，又随着1720年的泡沫破裂跌入低谷。

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Over the decades, the fears have waxed and waned, but questions about their safety are still debated.

几十年以来，这种畏惧感经历了阴晴圆缺，但关于它们安全性的问题还在争论当中。

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According to Dr Bucher, it occurred faster than anyone had previously thought, but also stuttered on the way as the volcanic activity waxed and waned.

根据布赫尔博士的研究，这种重组发生的比之前任何想的都要快，但是也在中途因为火山活动的几度活跃和沉寂而有所迟缓。

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During my first job at the Bank of Boston, I noticed that the bank's profitability and stock price waxed and waned with the fortunes of the New England economy.

FORBES: Bank Shot, Global Pocket

Other establishments, though, have waxed and waned in their credit-friendliness over the years.

BBC: How credit card-friendly is your next destination?

Merchant power waxed and waned throughout most of the pre-modern period, always dependent on protection from the warrior caste.

ECONOMIST: A history of power