取指令对于每个指令来说都是个普通操作，它包括从内存单元中读指令。

The instruction fetch is a common operation for each instruction , and consists of reading an instruction from a location in memory.

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注意其中的差别，方法，也就是指令序列，其实是需要读的，被当做数据来对待。

Notice the difference. The recipe, the sequence of instructions, is actually getting read in, and it's treated just like data.

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Vega处理器包含了一个客户化的读屏障指令，它具有字段检查元数据和针对GC压缩页面的特殊的虚拟内存保护。

Vega processors included a custom read barrier instruction that included bit field checking in reference metadata as well as special virtual memory protection for GC-compacted pages.

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Notice the difference. The recipe, the sequence of instructions, is actually getting read in, and it's treated just like data.

注意其中的差别，方法，也就是指令序列，其实是需要读的，被当做数据来对待。

麻省理工公开课 - 计算机科学及编程导论课程节选