casual tendency的用法和樣例：
例句
- Around the world men and women vary in their attitudes to casual sex.
全球范圍內，男人和女人對隨意性行為的態(tài)度是不一樣的。 - Contrary to some people's beliefs, increasing teenage pregnancies do not imply an increase in casual sex and promiscuity.
和大多數人的想法相反的是，不斷增長(cháng)的青春期妊娠并不意味著(zhù)隨意性行為和濫交的數量增長(cháng)。
