For the same reason there is a comma with no last element in the linked set example.

出于相同的原因，在链接的集示例中有一个逗号，而没有最后一个月份。

youdao

This is a linked set of objects that, for the most part, goes backward up through the view hierarchy.

响应者链是一组对象链接集，多数部分是通过视图层次结构向上延伸的。

youdao

When an association continues long enough for two people to become linked together by a relatively stable set of expectations, it is called a relationship.

当一段联系持续时间足够长，使两个人通过一组相对稳定的预期连结在一起，这就叫做关系。

youdao

BP's losses for the past quarter amount to some $17 billion, due to having to set aside more than $32 billion for costs linked to the oil spill off the U.S.coast in the Gulf of Mexico.

VOA: standard.2010.07.27

So what he has created is a highly linked set of Materials that conserves the foundation for a Very different discussion that would normally Go on in a Shakespeare course.

所以他创建的是一个联动的,一系列资料，这些可以作为莎士比亚课堂上,很不一样的讨论的基础,继续讲莎士比亚。

麻省理工公开课 - 媒体、教育、市场课程节选

He said this could be linked to behavioural patterns set in childhood - such as diet and how much exercise was taken.

BBC: Obesity 'starts in the womb'

An eclectic crew of Christians, Jews, Buddhists and agonistics, the faith we shared was not linked to a particular set of religious convictions.

FORBES: Selling My Company By Giving It Away

Teachers' pay in England and Wales could be linked to performance and set at different local levels, under proposals set out by the government.

BBC: Michael Gove pushes for performance pay for teachers