We must study hard to keep up with The Times.
我们一定要努力学习,以赶上时代的步伐。
She is too conservative to keep up with The Times.
她太保守无法跟上时代。
Furthermore, laboratory analysis has kept up with The Times.
另一方面实验室的分析技术也紧跟时代。
But the laws have not kept up with the times. There is something wrong with that picture.
VOA: standard.2009.07.27
And what we end up with for the energy then is 2.84 times 10 to the -19 joules.
我们算出的能量是,2,84乘以10的-19次方焦耳。
So what we end up with for the number of photons in this laser beam of light is 2.1 times 10 to the 17 photons.
这个激光束的数目是,2,1乘以10的17次方。
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