以下为句子列表：
英文: After puberty, a girl's waist narrows in proportion to her hips as oestrogen levels rise, and then expands as the hormone concentration decreases with age.
中文: 青春期后，由于雌激素分泌增多，女人腰部与臀部的比例增大，而随着年龄的增长荷尔蒙分泌会下降，腰身也将变粗。
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英文: But if oestrogen has been clearly associated with cancer growth, the role of progesterone in breast cancer (and consequently the importance and the specific mechanism of progesterone-blocking therapy) is much less clear.
中文: 但是，如果雌二醇已经参与肿瘤的生长，孕酮在乳癌中的作用（孕酮阻断疗法的重要性和具体机制）就不很清楚了。
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英文: In fact, ovarian hormones known to play an important role in the development of normal breast tissue - such as oestrogen and progesterone - also seem to be involved in breast cancer development, with 70 to 80% of primary breast tumours showing oestrogen a
中文: 事实上，已知的卵巢激素在正常乳房组织发育过程中有重要作用——例如雌二醇和孕酮——同样也参与了乳癌的发展，70％－80％原发性乳癌的肿瘤细胞都存在雌二醇和/或孕酮受体。
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英文: In result, anti-hormonal therapy (especially anti-oestrogen therapy), which blocks the hormones' action, is widely used against the disease with good results.
中文: 因此，抗激素治疗（尤其是抗雌二醇治疗）阻断了激素的作用，广泛用于治疗乳癌并获得良好效果。
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英文: Put together with Dr Berman's observations, this suggests that early in the cycle, when there is little progesterone around but oestrogen is abundant, either some aspect of the reward circuit is vulnerable to corruption or a protective effect is lacking.
中文: 加上波曼的观察，这就间接地表明在经期初期，也就是雌激素很丰富但黄体酮几乎没有的时候，大脑中报偿性系统的某些方面在抵挡腐化时变得不堪一击，保护效应也有所缺失。
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