Basically, a queue is a first-in, first-out (FIFO) data structure.

基本上，一个队列就是一个先入先出(FIFO)的数据结构。

youdao

These functions permit the creation of normal, batch, or real-time tasks (first in, first out [FIFO] or round-robin), with a specific priority or nice level.

这些函数允许创建正常、批处理或实时任务（先入，先出 [FIFO] 或循环），具有特定的优先级或高等级。

youdao

In computer science, a queue data structure is your basic first-in, first-out (FIFO) structure.

在计算机科学中，队列数据结构是基本的先进先出(FIFO)结构。

youdao

And as you know, there is a convergence here in terms of reporting requirements towards FIFO -- first in, first out -- as opposed to last in, last out.

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