Thus its forecasts don "t predict the big job-market swings or sudden changes in the supply of workers that can easily happen in a volatile economy."

因此，它无法预测出经济不稳定时容易发生的就业市场大幅波动或劳动力供给的突然变化。

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Most chemical changes, most physical changes don't happen in isolated systems.

但是大部分的化学反应,并不是发生在孤立系统中的。

麻省理工公开课 - 热力学与动力学课程节选

Still, federal changes won't happen until 2009 at the earliest.

FORBES: If only we knew who they were.

But widespread personnel changes won't happen yet, said Jones.

BBC: Eddie Jones wants to build on the World Cup

John Glenn, the committee's ranking Democrat, said the inquiry "had the potential to be a catalyst for a public uproar" to force legislative changes, but that didn't happen.

CNN: Thompson Committee Wraps Up Its Work