1、Anovulation is a condition in which a woman does not ovulate regularly, resulting in difficulty conceiving.
无排卵是指女性不规律地排卵，导致难以怀孕。

2、Anovulation can be caused by hormonal imbalances or underlying medical conditions.
无排卵可能是由激素失衡或潜在的医学问题引起的。