钙可保持血液呈弱碱性的正常状态，防治人陷入酸性易疲劳体制。
Calcium can maintain blood to show alkalescent whack, person of prevention and cure is immersed in acidity easy fatigue system.
疲劳驾车时，人的判断能力下降，易反应迟钝和操作失误。
Fatigue driving, the judgment ability to drop, easy unresponsive and operating the fault.
疲劳驾车时，人的判断能力下降，易反应迟钝和操作失误。
Fatigue driving, the judgment ability to drop, easy unresponsive and operating the fault.
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