但是通过签发applet，即可允许可读写文件的访问权限。

By signing an applet, access to read and write files is permitted.

youdao

一旦连接起来，你就能读写文件的任意部分，就像它已经不再是非托管内存数组了。

Once linked, you can read and write to any part of the file as if it were nothing more than just an array of unmanaged memory.

youdao

ABC的设计者放弃了用来读写文件的IO的方法，他们转而在程序里使用一些全局变量。

Instead of IO, where you could read a file and write a file, ABC's designers decided to just have global variables in the program.

youdao

And this is because as you start writing--saving files to your hard drive, what happens is you might save this file here, then this one, then this one, then this one, but very reasonably you might go back eventually and delete this one.

这是因为当你开始对硬盘驱动器进行读写时,你可以保存一个文件到磁盘的某处，然后再一个，再一个，又一个，最后你可能回到这,并删除这一个文件。

哈佛公开课 - 计算机科学课程节选