Between the fibers are many small pockets of air. 纖維之間有很多小氣泡。
After semination, the penis continues to raise inserts, may cause in the vagina to enter many air, produces the bubble to hinder to become pregnant. 當射精后，陰莖繼續提插，可使陰道內進(jìn)入較多的空氣，產(chǎn)生小氣泡而妨礙受孕。
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