deletion of stack

例句：

1. 1.The company decided to delete the old softwareand replace it with a new version.
   公司决定删除旧软件并替换为新版本。
2. 2.The teacher asked us to delete all ournotes before the exam.
   老师要求我们在考试前删除所有笔记。
3. 3. The deletion of thefile caused the program to crash.
   文件的删除导致程序崩溃。