cross up

例句：

1. 1. He crossed up the task by adding unnecessary details.
   他通过添加不必要的细节使任务变得复杂。
2. 2. The new policy will cross up our efforts to achieve a common goal.
   新政策将使我们实现共同目标的努力变得复杂。
3. 3. She crossed up her workload by taking on an extra project.
   她通过接手一个额外的项目使工作量变得复杂。