延迟着床是指胚胎在发育到胚泡阶段时暂时进入休眠状态，并不立即着床。
Delayed implantation occurs when the conceptus enters a state of suspended animation at the blastocyst stage of development.
孤雌生殖是指卵细胞不经过受精而形成胚并发育为个体的生殖方式。
Parthenogenesis is a kind of reproductive mode by which the egg develops into embryo without fertilization and develops into plant finally.
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