作业帮The screen will remain black for 15 seconds.
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/11 17:30:29
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The screen will remain black for 15 seconds.
The screen will remain black for 15 seconds.
The screen will remain black for 15 seconds.
屏幕黑屏了15秒.
屏幕将保持黑屏状态15秒钟
黑屏15秒钟