As a timepiece, it's comparable to digital watches circa 1978: the screen is usually in a black, juice-conserving state, so to check the time you need to press the power button.
作为一个计时器，它和1978年左右的电子表差不多：屏幕平时是黑的，好像在保存果汁一样，所以你需要按下电源按钮才能查看时间。
As a timepiece, it's comparable to digital watches circa 1978: the screen is usually in a black, juice-conserving state, so to check the time you need to press the power button.
作为一个计时器，它和1978年左右的电子表差不多：屏幕平时是黑的，好像在保存果汁一样，所以你需要按下电源按钮才能查看时间。
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