该代码还有很大的性能改进空间，但是这应当已经向您展示了如何动手处理问题的一般概念。
There's plenty of room for performance improvement in that code, but this should give you a general idea for how to approach the problem.
在此之前我常犯错误，我不知道如何处理问题，如何自己动手。
Before this I was making mistakes, I didn't know how to deal with problems, how to do things for myself.
后台服务使创建能够不用用户直接动手而执行自动处理的不可见的应用组件成为可能。
Background services make it possible to create invisible application components that perform automatic processing without direct user action.
这个窗口提供控制装备在现场中处理和障碍的互动手写体。
The section "Obstacle Avoidance" provides controls to setup the script that manages the interaction with the obstacles in the scene.
这个窗口提供控制装备在现场中处理和障碍的互动手写体。
The section "Obstacle Avoidance" provides controls to setup the script that manages the interaction with the obstacles in the scene.
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