Similarly , operations on data may require access to more than just one element at a time in a predetermined sequence 同样，对数据的操作可能需要按预定的顺序一次访问一个以上的数据元素。
2.
A predetermined sequence of commands programmed as one command during the assembly of a computer program . macros enable users to execute a number of commands with a single keystroke 中义电脑程式中将一串预先决定的指令组合成一个单一的指令。巨集让使用者可以按一个键就执行一串指令。
