添加的代码只是将开始时间保存为局部变量，然后在方法结束时计算持续时间并打印到控制台。
The added code just saves the start time to a local variable, then computes the elapsed time at the end of the method and prints it to the console.
他试图唤醒他们，首先是持续、连夜打印油印报纸，然后是战斗。
He tried to rouse them, first by staying up night after night to print mimeograph newspapers, and then by fighting.
需要用五秒钟的活动持续时间来安排到打印机有序传输数据。
There is a five second activity duration to account for the serial transfer of data to the printer.
这不仅仅意味着电泳的显示方式运行的成本更便宜，不必持续地刷新屏幕使得它们的阅读更舒适，正如它所宣称的那样，阅读效果同打印出来的文本一样舒适。
Not only does this mean that electrophoretic displays are cheaper to run, the lack of constant refreshment makes them more comfortable to read—as comfortable, it is claimed, as printed paper.
未使用的粉末收集并回收下一次打印，使得它比其他一些制造方法，在你只需要报废刻出来的材料更具有可持续性。
The unused powder is collected and recycled for the next printing, making it more sustainable than some other manufacturing methods, in which you'd just have to scrap the carved out materials.
未使用的粉末收集并回收下一次打印，使得它比其他一些制造方法，在你只需要报废刻出来的材料更具有可持续性。
The unused powder is collected and recycled for the next printing, making it more sustainable than some other manufacturing methods, in which you'd just have to scrap the carved out materials.
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