逆转现象是指多孔动物胚胎发育成胚囊后，动物极的小细胞向囊胚腔内生出鞭毛，另一端的大细胞中间形成一个开口，后来囊胚的小细胞由开口倒翻出来，里面的小细胞具鞭毛的一侧翻到囊胚的表面。这样，动物极的一端为具鞭毛的小细胞，植物极的一端为不具鞭毛的大细胞，此时称为两囊幼虫。随后两囊幼虫离开母体游泳一段时间，接着具鞭毛的小分裂球内陷形成内层，大分裂球留在外边形成外层的现象。
我国上市公司净利润小与利润总额的利润逆转现象频频出现。
The profit reversion of net profit and total profit in Chinese listed companies has become a frequent phenomena.
中日文中存在的字序逆转现象不是随意产生的，经历了历史的变迁。
The phenomena of the inversion of word order were not made casually, but were naturally formed through historical changes.
结论：心理生理性失眠患者试验前给予心理干预可呈现首夜效应逆转现象。
Conclusion: The results suggest that preceding test with to take psychology interference were present reverse changes of PSG in first night.
应用推荐