Prices fluctuate, in response to harvests, natural disasters and political instability; and when they rise, it takes some time before new sources of supply become available.

价格会随着收成、自然灾害和政治不稳定而波动；当价格上涨时，需要一段时间才能找到新的供应来源。

youdao

Who attireth them when they rise?

他们起床后，谁来打扮他们呢？

youdao

They stayed relativfely quiet on this front in 2007, so maybe 2008 will be when they rise up to the challenge of Google Apps.

它们在2007年看起来相对还比较平静，因此，也许2008年将会是他们兴起的时候，也应迎接来自Google应用程序的挑战了。

youdao

And Locke observes that when people are the judges of their own cases, they tend to get carried away, and this gives rise to the inconvenience in the state of nature.

而洛克发现当人们审理自己的案子时，他们往往会失去理智，这就引出了自然法的不便之处。

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Typically, they will observe a previous supervisor and emulate their actions when they rise.

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When they rise to the same level as the experienced producers, the tariffs will be no longer needed.

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If central banks focus on asset markets when they rise as well as when they fall, they will remove much of the froth.

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