由于地址错误，这些信件一直未被收取。

These letters remained ___uncollected due to incorrect addresses.

街角的垃圾已经两周没人清理了，开始散发出难闻的气味。

The ___uncollected garbage on the street corner has been piling up for two weeks and started to smell bad.

这位作家有许多未收录的短篇故事尚未出版。

The writer has many ___uncollected short stories that have not been published yet.