有些女性即便是深爱着伴侣或是经由调情后已完全兴奋,但她就是无法轻松做爱,因为男方的阴茎似乎是在撞击着阴道壁,致使女方除了疼痛之外没有任何感觉。很多伴侣都有这种困扰,他们甚至会因此而放弃性交,并坚持以互相的手淫来代替,这样做是非常消极的。事实上,正常的阴道可以适应任何尺寸大小或形状的阴茎。阴道是一种类似六角手风琴的管状肌肉,兴奋状态时会扩大并膨胀,在阴道口周围的环状肌肉组织,时会产生痉挛 Some women, even when they are deeply in love with their partner or completely excited by flirting, can not easily make love because the man’s penis appears to be struck against the vaginal wall, leaving the woman without any sensation other than pain. Many couples have this trouble, they will even give up their sexual intercourse and insist on mutual masturbation instead of doing so is very negative. In fact, the normal vagina can adapt to the penis of any size, size or shape. The vagina is a tubular muscle resembling a hexagonal accordion, which expands and swells in the excited state, causing spasms in the ring-shaped muscle tissue around the vaginal opening