他不时地抬起头看看时钟，然后又接着看报纸。
Sometimes he looked up at the clock, and then he went back to reading his paper.
如果你想要晋级下一阶段，看看如何建立一个数码时钟和单片机，看看微控制器的工作。
If you would like to advance to the next level and see how to build a digital clock with a microcontroller, see how Microcontrollers Work.
你能通过这个滑板公园里的所有水平吗？选择您的主板，看看是否你能打败时钟。
Can you make it through all the levels in this skate park? Pick your board and see if you can beat the clock.
你能通过这个滑板公园里的所有水平吗？选择您的主板，看看是否你能打败时钟。
Can you make it through all the levels in this skate park? Pick your board and see if you can beat the clock.
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