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the pulse rates of subjects in the control group remained th

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the pulse rates of subjects in the control group remained the same or changed no more than 4 beats with an average difference between the initial and final tests of zero
the pulse rates of subjects in the control group remained th
控制组的测试对象的脉搏率保持不变,或者从测试开始到结尾的平均脉搏变化不超过4下.
再问: 最后那个zero怎么解释啊
再答: 從零開始計算的。以零為基準的。
再问: 谢谢啊,你真牛,能加个qq吗,以后想继续请教你英语
再答: 可以,不過我經常在百度,加百度Hi吧。