One of the central questions in the metaphysics of pregnancy is this: Is the foetus a part of the mother? In this paper I aim not to answer this question, but rather to raise methodological concerns regarding how to approach answering it. I will outline how various areas attempt to answer whether the foetus is a part of the mother so as to demonstrate the methodological problems that each faces. My positive suggestion will be to adopt a method of reflective equilibrium. The aim of this is to ensure that pregnancy be included in the tribunal of experience that our theories are held up against such that our theories can accommodate what we say about pregnancy, whilst also ensuring that what we say about pregnancy be theoretically informed. That way, we rethink pregnancy in light of our theories as well as rethinking our theories in light of pregnancy.

怀孕形而上学的核心问题之一是：胎儿是母亲的一部分吗？在本文中，我的目的不是回答这个问题，而是提出关于如何回答这个问题的方法论问题。我将概述各个领域如何试图回答胎儿是否是母亲的一部分，以展示每个领域面临的方法论问题。我的积极建议是采用反射平衡的方法。这样做的目的是确保将怀孕纳入我们的理论所反对的经验法庭，以便我们的理论能够适应我们对怀孕的看法，同时还确保我们对怀孕的看法在理论上是知情的。那样，