重点讲解：
1. engage in 参与；从事；
Industry leaders want scientists to engage in fundamental research, not applied research.
行业领袖希望科学家从事基础性研究，而非应用性研究。
2. appeal to sb. to do sth. 呼吁；恳请；恳求；
The president appealed to deputies to approve the plan quickly.
总统呼吁议员尽快通过这一方案。
3. encourage sb. to do sth. 鼓励；激励；
We encourage all students to work at their own pace.
我们鼓励学生都按自己的节奏学习。
4. be due to do sth. 预期的；
The factory is due to be demolished next year.
这个工厂定于明年拆除。