乘飞机旅行的人数将以每年大约6%的速度持续增加。
但以目前猎杀大象的速度，这种说法将持续不长。
这个国家的人口持续以每年1200万人的速度增长。
The nation's population continues to rise at a speed of 12 million per year.
如果膨胀速度持续加快，那么宇宙将会终结于冰川。
If the expansion will continue to speed up the Universe will end in ice.
因此，价格会以过快速度上涨，令这种情形变得难以持续。
As a result prices rise way too fast, and this situation becomes unsustainable.
这个过程会持续到引擎速度达到850转每分钟。
This process will continue until the engine speed reaches 850 RPM.
其增长速度是相当缓慢，但持续。
虽然六周的假期将过去以闪电般的速度，其影响必将持续很长时间。
Though the six week vacation will pass away at lightning speed, its influence is bound to last long.
虽然六周假期会会以闪电般的速度逝去，但其影响必将持续很长时间。
Though the six week vacation will pass away at lightning speed, its influence is bound to last long.
六个星期的假期都会消逝在闪电般的速度，虽然及其影响必将持续很久。
Though the six week vacation will pass away at lightning speed, its influence is bound to last long.
但天平的另一方面，则是美国钻探速度加快，钻井数量持续增加。
However, the flip side of the equation is faster drilling from the U. s.
该职业的就业前景预计会以中等增长速度持续增长过2010年。
Employment is expected to grow about as fast as average for this occupation through 2010.
最后，将速度降到每分钟四十下或少于四十下，持续约五分钟。
Finally, slow down to 40 RPMS or less for about five minutes.
最后，将速度降到每分钟四十下或少于四十下，持续约五分钟。
Finally, slow down to 40 RPMS or less for about five minutes.
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