为了故意作对而继续这样做是不对的。It would be wrong to continue out of perversity.如果你曾经和他作对过，就别想了，你没戏了。If you ever cross him, forget it, you're finished.从那以后，生活便成了处处与校规作对。After that, life became a matter of defying school rules....
可以采取疫苗接种和其他预防措施。Vaccination and other prophylactic measures can be carried out.接种疫苗的成本合计约60万美元。The cost of the immunizations was about $600,000 all told.目前正在人类志愿者身上试验12种试用疫苗。Twelve potential vaccines are currently being ...