floppy disc prototype system

例句：

1. 1.The floppy disc was the first storage medium for computers.
   软磁盘是计算机的第一种存储介质。
2. 2. She copied all her important documents onto a floppy disc.
   她把所有重要的文件都复制到了一个软磁盘上。
3. 3. The floppy disc is now obsolete and has been replaced by flash memory.
   软磁盘现在已经过时了，已经被闪存所取代。