The quartz clock keeps very good time.
石英钟走得很准。
The quartz clock keeps very good time.
石英表走得很准。
Nearly all computers contain a quartz-crystal clock to regulate their operation.
几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。
This is a Care Bear quartz wall clock .
这是一个负照顾石英挂钟。
This is a Care Bear quartz wall clock .
这是一个负照顾石英挂钟。
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