研英翻译演练(56)
<p> <span word="Absence">Absence</span> <span word="of">of</span> <span word="the">the</span> <span word="linear">linear</span> <span word="gate">gate</span> <span word="pulse">pulse</span> <span word="indicates">indicates</span> <span word="that">that</span> <span word="the">the</span> <span word="input">input</span> <span word="pulse">pulse</span> <span word="to">to</span> <span word="be">be</span> <span word="processed">processed</span> <span word="dose">dose</span> <span word="not">not</span> <span word="meet">meet</span> <span word="the">the</span> <span word="requirements">requirements</span> <span word="that">that</span> <span word="are">are</span> <span word="set">set</span> <span word="up">up</span> <span word="by">by</span> <span word="the">the</span> <span word="lower">lower</span> <span word="and">and</span> <span word="upper">upper</span> <span word="level">level</span> <span word="control">control</span> <span word="and">and</span>/<span word="or">or</span> <span word="no">no</span> <span word="pulse">pulse</span> <span word="is">is</span> <span word="present">present</span> <span word="at">at</span> <span word="the">the</span> <span word="input">input</span>.</p><p> 参考答案：</p><p> 要点：英语中有些词语和短语不和否定词连用，而是通过本身的词汇意义或引申意义表现出否定意味，如本句的<span word="absence">absence</span>就表示否定，这种结构被成为词语否定结构。此外，本句含有一个定语从句，由关系代词<span word="that">that</span>引导，修饰<span word="requirements">requirements</span>。</p><p> 译文：若没有线性门脉冲产生，则说明进行处理的输入脉冲不符合低电平和高电平控制要求的条件，或者在输入端根本没有脉冲。</p><p> </p>
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