以下为句子列表：
英文: Three are natural hormones -- estradiol, progesterone and testosterone -- and three are synthetic hormones -- zeranol (an estrogen), trenbolone acetate (a steroid with androgen effects) and melengestrol acetate (a progestin), the study authors said.
中文: 三种是天然激素――雌二醇，孕酮和睾酮，三种是合成激素――折仑诺（一种雌激素），醋酸去甲雄三烯醇酮（一种有雄激素作用的类固醇）和醋酸美仑孕酮（一种黄体酮），研究人员说。
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英文: Determination of Zeranol in Chicken Liver by LC - MS
中文: LC-MS法分析鸡肝中的玉米赤霉醇
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英文: In distilled water, the zeranol recovery is in the range of 90%~% and the coefficient of variation .7%~7.0%.
中文: 对水样中的玉米赤霉醇进行添加回收试验,样品加标回收率在90%～%,变异系数为.7%～7.0%。
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英文: The Embryotoxic Effects of Zeranol in Rats
中文: 玉米赤霉醇对大鼠的胚胎毒性
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英文: The extraction procedure was validated by analyzing samples spiked with zeranol at three different concentration levels of , 0 and 0 μg/kg. The average recoveries and the relative standard deviations were 70%-80% and 8 %- 9%, respectively.
中文: 果表明,样品的加标平均回收率为7 0%～80 %,相对标准偏差为8 %～ 9%,定量测定低限(LOQ)为μg/kg。
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