预防

• Prevention is the cheapest means to avoid undesirable competition .
  预防是避免不必要的竞争的廉价方法。
• As a prevention against diseases people should be inoculated .
  作为一种预防疾病的措施，人们应该打预防针。
• Scientists may soon be able to offer hepatitis a protection .
  科学家们可能很快就能提出预防甲型肝炎的方法。
• All precautions have been taken , so that we expect to succeed .
  已经采取了各项预防措施，所以我们有希望成功。
• Herbs for the prevention of encephalitis can be found everywhere in this area .
  预防脑炎的草药在这一地区俯拾皆是。
• Their real job is not so much to repair damage as to prevent it .
  他们的实际工作与其说是排除故障，不如说是预防故障。
• With such precautions the courtiers might bid defiance to contagion .
  由于采取了这些预防措施，侍臣们根本不必担心传染。
• All agents used to combat motion sickness should be given prophylactically .
  所有用作抗晕动病的药物，都应采取预防给药。
• Perhaps he obtained it as his last and utmost precaution against evil yesterday .
  或许昨天他才得到它，以备万一，预防不测的。
• It should be ascertained if preventive or control procedures have already been attempted .
  应查明是否已采取了预防或控制措施。