Complex sentence: In human fertilization, hyaluronidase is released by the acrosome of the sperm cell after it has reached the oocyte, by digesting proteins in the zona pellucida, thus enabling conception.
Split into simpler sentences: In human fertilization, hyaluronidase is released by the acrosome of the sperm cell after it has reached the oocyte. Hyaluronidase aids in digesting proteins in the zona pellucida, thus enabling conception.