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This system has traffic light showing function, clock showing function and time count-down showing function.
该系统具有红绿灯显示功能、时钟显示功能及时间倒计时显示功能。
youdao
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This system has traffic light showing function, clock showing function and time count-down showing function.
该系统具有红绿灯显示功能、时钟显示功能及时间倒计时显示功能。
youdao