The dated isotope record shows that the fluctuations in global ice volume over the past several hundred thousand years have a pattern: an ice age occurs roughly once every 100,000 years.

同位素年代记录显示，过去几十万年全球冰量的波动有一个模式：冰河期大约每10万年发生一次。

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Once the event actually occurs, then the application will store the actual event time.

一旦事件确实发生了，那么应用程序将存储实际事件时间。

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Once the navigation occurs, you move to the final phase of the lifecycle.

一旦导航发生之后，您就转换到生命周期的最后一个阶段了。

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Once you have a difference that occurs, two cells are difference, those differences can propagate as the cells continue to divide.

一旦产生差异,产生两个不同的细胞,这些差异会伴随着,细胞分裂过程代代相传

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Once this occurs, in addition to taxes there's a 10 percent penalty assessed.

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Once this occurs, employers will begin hiring to support that demand.

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And once that occurs, the President is hopeful that there will be a lot of political courage on display in the Congress when that comes up for a vote.

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