Venereal disease continues to be a significant public health problem.性病仍为严重的公共健康问题.This completely is stems from contraceptive and the prevention venereal diseases consideration.这完全是出于避孕和预防性病的考虑.Venereal the contagion wi...
一面小旗在微风中飘动.A small flag fluttered in the breeze.那些卡片好像许多面小旗点缀着教室.Those cards seemed like so many little flags dotted about schoolroom.我们的向导手里拿着一面小旗走在前面.Our guide walked ahead with a little flag in hand....