盼望有一天有人会研制出一种能有效预防疟疾的疫苗。Roll on the day someone develops an effective vaccine against malaria.抗疟疾的疫苗正在试验阶段。Anti-malarial vaccines are now under-going trials.下周，卫生部长们将在阿姆斯特丹聚首共商防治疟疾的策略。Next week, health ministers gather i...
我转过身，在黑板上写下了题目。I turned around and wrote the title on the blackboard.该题目可能暗指艾滋病。The title is per-haps an allusion to AIDS.这个题目可以分四点来谈.Here the subject may be dealt with under four headings....