来源：学生作业帮 编辑：拍题作业网作业帮 分类：综合作业 时间：2024/04/26 06:26:12
Penis vagina是什么意思
Penis vagina
阴茎阴道
双语对照
Another type of natural family planning is withdrawal, in which the man withdraws hispenis from the vagina before ejaculation to prevent pregnancy.
另一种自然避孕法是撤离法,是通过男性在射精前撤离阴道来避免怀孕.
作业帮