Gairdner -LRB- 1949 -RRB- states that the foreskin protects the glans but some studies show that inflammation of the glans is more common when the foreskin is present .
The foreskin protects the glans penis when the penis is not erect . Most mammals have foreskin .
The foreskin protects the glans penis when the penis is not erect . Most mammals have foreskin .
簡略化する: Gairdner -LRB- 1949 -RRB- states that the foreskin protects the glans but some studies show that inflammation of the glans is more common when the foreskin is present . 出力: