就业和增长要恢复到衰退前的水平，将要相当长的时间。
It will be quite some time until employment and growth return to pre-recession levels.
在设定时间前，恢复网络的唯一办法只有重启电脑。
The only way to regain network access before the allotted time has passed is to reboot the computer.
他们的主要成果见于图表3：在每次彻底的海冰移除后，大约只要两年时间，冰层就可以大致恢复到移除前的水平。
Their main result is shown in Fig. 3: it took only about two years after each complete sea-ice removal until the ice had recovered to roughly the extent it had before the removal.
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