Early spermatid was oval in shape, with a big and round nucleus;
早期精细胞呈椭圆形，细胞核大而且圆，核膜不规则，多呈锯齿状；
The secondary spermatocytes become the spermatid quickly by short time development.
次级精母细胞经短暂的发育过程很快形成精细胞。
The secondary spermatocytes become the spermatid quickly by short time development.
次级精母细胞经短暂的发育过程很快形成精细胞。
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