| 单词 | reciprocity | 
| 释义 | Word Frequency reciprocity(ˌrɛsɪˈprɒsɪtɪ) nounWord forms:  plural -ities 1.  reciprocal action or relation  2.  a mutual exchange of commercial or other privileges  Word origin C18: via French from Latin reciprocus reciprocal | 
	
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