Dead mappings could be eliminated by periodically scanning the map, calling get on each weak reference, and removing the mapping if get returns null.

可以通过周期性地扫描Map，对每一个弱引用调用get，并在get返回null时删除那个映射而消除死映射。

youdao

Dead links typically occurs if a reference is valid in the development schema but not in the main schema that you perform the importintegration against.

死链接一般只是在引用在开发方案中有效时才会发生，但是只是在主方案中您才会执行importintegration。

youdao

In this article, "dead links" in ClearQuest schemas refer not only to reference or REFERENCE_LIST types of fields but also to any kind of reference from one object to another.

在本文中，ClearQuest方案中的“死链接”指的不但是字段的REFERENCE或者REFERENCE _ LIST类型，同样还包括一个类型到另一个类型任意形式的引用。

youdao

"The Marcal river is dead, " said Tibor Dobson, spokesman of the Hungarian Disaster Management Agency - a reference to a smaller river which flows north from the disaster area towards the Danube.

BBC: Toxic sludge carpets homes in Hungary

Also, that the health board review its end-of-life care, with specific reference to completion of Do Not Resuscitate forms, and that it issues the dead man's family a full and sincere apology.

BBC: Medical equipment

Eomer and his men going missing...an army of Elves turning up (I assume this is a mis-timed reference to Elrond's sons and the Dunedin turning up before Aragorn takes the Paths of the Dead ?)...

BBC: The Two Towers: Your views