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重点讲解：
1. prevent sb./sth. from doing sth. 阻止；制止；阻碍；
Further treatment will prevent cancer from developing.
进一步的治疗将阻止癌症恶化。
2. pass onto 将…传给；
Then the men pass it onto their wives.
然后，男人传染给他们的妻子。
3. work on 研究；对…作调查；
We work on improving visual acuity.
我们致力于提高视觉的敏锐度。
4. lead to 招致；致使；导致；
Investment in education and research and a strong safety net can lead to a more productive and competitive economy.
教育与科研投资以及强大的社会保障网络，可以催生生产率更高、更具竞争力的经济体。
