冷冻损伤胚胎的确切数目各不相同。
计划的确切数目你愿意花时间为每日大师发言。
Plan the precise number of hours you're willing to devote daily to guru-speak.
然而,媒体不得进入战区因此很难证实的确切数目。
However, media are not allowed into the war zone so it is difficult to substantiate the exact number.
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