relocatable block of instruction 可浮动指令块 ; 可再定位指令块
instruction block [计] 指令块
block-push instruction [计] 成组推入指令 ; 区块推入指令
block I-O instruction 成组输入输出指令
block compare instruction 块比较指令
block push instruction 成组推入指令
block transfer instruction 字组传送指令
block handler macro instruction 块处置器宏指令
A compound statement consists of a flow control instruction, followed by a colon character (:), followed by a block of program statements.
一个复合语句包括一个流控制指令，后跟一个冒号(：)，然后再是一个程序语句块。
Activity is a unit of instruction execution, and is the building block of a process.
活动(activity)是指令执行的一个单元，它是一个流程的基本组成部分。
The key idea here is that when the first instruction runs, all of the subsequent instructions in that block are guaranteed to be executed without interruption.
这里的关键思想在于，当第一个指南运行的时候，该块中随后所有指南都一定会得到执行而且不会得到中断。
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