【性知識】保險套不是99%有效 | 合法醫療器材資訊網

2015年9月5日—附上保險套正確用法https://www.dcard.tw/f/bg/p/528193換版兩次因為我覺得...但是也不是如果每個人都完美的照正確使用方法來使用保險套了話保險套的...所以不管是體外射精還是要射前才戴保險套懷孕機率基本上是相同的。

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