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...
To avoid extra expense and mess later on, try to decide on fittings before the plastering's finished.为避免将来出现额外的开支和不必要的麻烦，尽量在抹灰完工之前把固定设施确定下来。Sue's cousin was plastering the ceiling in a dank basement.苏的表弟当时正在一间潮...