在超过四十年的时间里研究人员试图通过编程使计算机能够“理解”语言的结构和语音。
For over four decades the boffins tried to program computers to "understand" the structure and phonetics of language.
一门计算机语言可以看作是语言结构的一个分层级的树。
A computer language can be viewed as a hierarchical tree of language constructs.
类似于第5章，第6章假定读者具有计算机体系结构知识，并且至少有一些汇编语言编程的经验。
Like Chapter 5, Chapter 6 presumes knowledge of computer architecture, and at least some experience in programming assembly language.
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