She's dead set on getting this new job.
她打定主意要得到这个新工作。
She could be dead for all I know.
她说不定已经死了。
Why are you so dead set against the idea?
你为什么那样死命地反对这个主意呢？
Why study Latin? It's a dead language.
为什么学拉丁语？它已经不再有人说了。
We don't know whether he's alive or dead.
我们不知道他是死是活。