In response to effective stimulation, the vaginal walls begin to secrete a clear fluid which soon provides a moist coating for the entire vagina in preparation for coitus.

 
  • 作为有效性刺激的反应,阴道壁分泌一些清亮的液体,不久液体在整个阴道壁上形成润滑层,为性交做好准备。
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