以下为句子列表：
英文: Any circumstance that affects the amount of available insulin-like growth factor so as to modify the sensitivity of the ovary to follicle-stimulating hormone appears to govern the rate of spontaneous twinning,Steinman said in a statement.
中文: 斯汀曼在一份声明中提到：任何能影响类胰岛素生长因子分泌量的因素都会改变卵巢对促卵泡激素的敏感度，从而影响自然孪生的几率。
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英文: Spontaneous speeches are seldom worth the paper they are not written on.
中文: 自然,感动人心的演说,通常是不会被写在稿子上的!
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英文: When you lose that spontaneous way to play, it is very difficult to fight against it.
中文: 当你潜意识中不想踢球的时候，这将让球员很难去对抗对方球队。
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英文: A new method of absolute calibration of photodetector sensitivity based on spontaneous parametric down-conversion(SPDC) biphoton field is described.The process of SPDC is studied theoretically.The single photon detection probability and two-photon coincid
中文: 讨论了一种基于自发参量下转换双光子场绝对校准光电探测器灵敏度的新方法，着重推导了对自发参量下转换过程中产生的单光子的探测概率和双光子的符合速率，从而阐明了绝对测量光电探测器量子效率的原理.基于这一方法对光子计数型光电倍增管的响应灵敏度进行了测量，并将实验结果与常规方法测得的结果进行了比较.
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英文: Abstract Recurrent spontaneous abortion (RSA) is defined as three or more consecutive pregnancy losses prior to the 20th week of gestation.
中文: 复发性自然流产（RSA）的定义是连续3次或以上在妊娠20周前发生妊娠的终止。
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