1. To sum up, the main points of the presentation are as follows.
总结一下，演讲的主要要点如下。

2. To sum up, we need to focus on improving communication within the team.
总的来说，我们需要集中精力改善团队内部的沟通。

3. To sum up, the project was a success due to everyone's hard work.
总的来说，这个项目取得成功是因为大家的努力工作。

4. To sum up, it is important to prioritize tasks based on their urgency.
总结一下，根据紧急程度来优先安排任务是很重要的。

5. To sum up, we must take action to address the issue before it worsens.
总的来说，我们必须采取行动解决这个问题，以免情况变得更糟。

6. To sum up, the key to success is perseverance and determination.
总结一下，成功的关键在于坚持和决心。