However, most often the case is less dramatic: Some people who engage in coitus simply do not know about contraception, or they are unable to get contraceptives, or they are young, careless and irresponsible, or the contraceptives they use do not work.
However, most often the case is less dramatic: Some people who engage in coitus simply do not know about contraception, or they are unable to get contraceptives, or they are young, careless and irresponsible, or the contraceptives they use do not work.
可是，最常见的则是荒唐可笑：那些盲目投入性行为的人对避孕一无所知，或不能得到避孕药具，或他们少不省事、粗心大意和缺乏责任心，或他们所使用的避孕药具不起作用。