Long-term smoking can hurt the whole hormone system of the body more, affect ovarian function, cause the infecund disease of endocrine reason.

长期吸烟更会伤害身体的整个激素系统，影响卵巢的功能，导致内分泌原因的不孕症。

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For a man - at least as far as his hormone system is concerned - succeeding, competing and beating his rivals is very much still a matter of life and death.

对一名男性来说，至少就他的激素系统而言，成功、竞争和打败自己的对手仍然是生死攸关的事情。

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A: the autonomic nervous system USES the hormone adrenaline, a neurotransmitter, or chemical messenger, to send signals to various parts of the body to activate the fight-or-flight response.

答：这套自动神经系统利用肾上腺激素(一种神经递质，或者称为化学信使)把信号发送到身体的各个部分，以便激活“斗争还是逃避”反应。

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The group is especially concerned about some chemicals which it says "turn up regularly" and "are known or suspected hormone disrupters which can work on the hormone system at very low levels".

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Its onset probably has to do with significant changes in the neuroendocrine (brain-hormone) system leading up to and occurring just after birth.

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PT141 is a copy of a hormone which has an effect on the nervous system called alpha-melanocyte-stimulating hormone.

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