- abbr. 磁盘操作系统（Disk Operating System）
不可数名词的用法：DOS is the part of a computer operating system that controls and manages files and programs stored on disk. DOS is an abbreviation for "disk operating system." 磁盘操作系统例：
Where do I find the instructions to load DOS programs from Windows 98?
Among them were poet Ezra Pound, and writers Gertrude Stein, John dos Passos, and F.Scott Fitzgerald.
Books that give a kind of guide to the dos and don'ts of princely behavior.
Our company this year will invest over $9 billion in RD.
Yazoo now makes six beers, including its signature Dos Perros Ale and Amarillo Pale Ale.
George Bush met Mr dos Santos this week and urged him to end the war.
For this reason, it is essential that the outside world puts pressure on Mr dos Santos.