9031647921模块备件英文说明

关于本节的比如黑板擦来说，也是奴此。编程者的初始反应是它与起动一台机器或改动一个方式不一样。然而，假如忽略实践使用，只研究目标运转所要求的事件或序列，那么在这些不同的使用中能提取出相似之处。
这个意图不能独登时达到，由于实践问题确实访碍某些抱负操作的发作。要记住的是，观察一个问题的方法不止一种，这个十分言简意赅的擦黑板程序就是其中一种方法。

About this section, such as blackboard eraser, it is also slave this. The initial reaction of the programmer is that it is different from starting a machine or changing a way. However, if we ignore the practical use and only study the events or sequences required by the target operation, we can extract similarities in these different uses.
This intention cannot be achieved immediately alone, because practical problems do hinder the onset of some ambitious operations. Remember that there are more than one ways to observe a problem, and this very concise blackboard cleaning program is one of them.