常見(jiàn)例句S. and Canada were surveyed by Corty, an associate professor of psychology at Penn State Erie, The Behrend College, and student Jenay Guardiani. 一項(xiàng)性愛(ài)調(diào)查得到了這樣的結(jié)論,最佳的性交時(shí)間為3至13分鐘。 返回 Guardiani