For the same reason there is a comma with no last element in the linkedset 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。
2
This is a linkedset 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。
3
So what he has created is a highly linkedset of Materials that conserves the foundation for a Very different discussion that would normally Go on in a Shakespeare course.