在她的演示中，她将总结研究的关键发现。

In her presentation, she will ___sum ___up the key findings of the research.

总之，这种方法的主要优点是成本效益和简单性。

To ___sum ___up, the main advantages of this approach are cost-effectiveness and simplicity.

你能用几句话总结这部电影的情节吗？

Can you ___sum ___up the plot of the movie in a few sentences?