就像许多具有超前思维的预见者所预言的那样，云已经成为了一种像水、电话和电那样不可缺少的现代实用工具。
Just as many forward-thinking visionaries predicted, the cloud has become a modern utility like water, phones, and electricity.
给出了现代实用型原子钟的性能指标比较表，和用现代无线电手段传递、比对时频标准信号达到的指标。
The comparison table of modern practical atom clock's performance index is given. The index of transferring and comparing standard time-frequency signal by modern radio means is also listed.
他们发明了实用的、相当成功的汽油机为动力的汽车，并且开创了现代汽车的时代。
They invented highly successful and practical gasoline-powered vehicles that ushered in the age of modern automobiles.
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