| 词汇 | pair-bonding | 
| 释义 | pair-bonding  noun [ U ]  biology specialized (also pair bonding) uk/ˈpeəˌbɒn.dɪŋ/ us/ˈperˌbɑːn.dɪŋ/  形成配偶关系 the act of forming a close relationship with one other animal or person  The pair bonding of gibbons can be contrasted with the "infidelity" of chimpanzees. 长臂猿的成对结合可以与黑猩猩的“不忠”形成对比。   Their bizarre pair-bonding exercises see the males beat their chests with their beaks to produce a quick-fire tapping sound. 
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