The social bond is strong glue.

社会关系就是一种强力粘合剂。

youdao

social bond with another chimpanzee.

其他黑猩猩社会关系的时候出现。

youdao

But chimpanzees also smile when they're trying to strengthen a social bond with another chimpanzee.

但当黑猩猩在巩固与同类的社会联系时，也会微笑。

youdao

It's a way to express our gratitude and to create a social bond with the host.

WSJ: Dan Ariely, Author of Predictably Irrational, on Holiday Gifts

It is certainly possible that excessive use of smart phones and social media can negatively affect the social bond a parent has with their child.

FORBES: Texting While Parenting: What Effect Can It Have On Your Children?

One particularly interesting type of charitable bond is the Social Impact Bond (SIB) pioneered by Social Finance.

BBC: Charitable bonds explained