| 单词 | substitutivity | 
| 释义 | Word Frequency substitutivity(ˌsʌbstɪtjuːˈtɪvɪtɪ) noun  logic, philosophy the principle that expressions with the same reference can be substituted for one another without affecting the truth-value of any context in which they occur   See also transparent context,  opaque context   | 
	
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