词典释义：
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Understandability: the degree to which the code source can be understood easily.
易理解性：系统源代码易于理解的程度。
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The four principal qc are relevance reliability understandability and comparability.
四个主要的特性是中肯，可信，易懂和可比性。
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Answer - the focus is on the understandability of basic concepts, not on performance.
答-重点是基本概念易懂，而不是性能。
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The understandability of teaching is an important standard for measuring the teaching level.
教师的教学是否具有可懂性是衡量教师教学水平的重要标准之一。
词根 understand
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understandable adj. 可以理解的；可以了解的
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understood adj. 被充分理解的；心照不宣的 v. 明白；懂得（understand的过去分词）；熟悉
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understand vi. 理解；懂得；熟悉 vt. 理解；懂；获悉；推断；省略