When people place their trust in an individual or an institution, their brains release oxytocin, a hormone that produces pleasurable feelings and triggers the herding instinct that prompts humans to connect with one another. (2018年 英语一 完形)
【难点分析】本句为复合句。a hormone是主句宾语oxytocin的同位语,后接定语从句。定语从句1中有两个并列结构:produces pleasurable feelings和triggers the herding instinct,第二个结构后接定语从句2 that prompts ... another修饰instinct。
【参考译文】当人们信任某个人或者某组织机构时,他们的大脑会释放出催产素,这是一种能够使人产生愉悦感并激发群居本能的激素,这种本能会促使人们互相联系。