在内分泌学，肽是指短链激素和神经递质结合的细胞表面。

In endocrinology, peptide refers to short-chain hormones and neurotransmitters that bind to the cell surface.

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我认为这一转变是很有意义的，因为激素替代治疗(我的演讲主题)是一个妇产科学和内分泌学方面的重要问题。

And I think it's important to see this because hormone replacement therapy — the topic of my lecture is an important issue in our both common field in gynecology and endocrinology.

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