In extreme cases this could create a lethal dosis of lead.

在极端情况下，这能够造成致人于死地的铅的。

The robbers tried to steal my bag, but I held on to it like grim death.

匪想抢走我的提包，我死死地抓住不松手。

His gaze was rigidly fixed ahead.

他死死地盯着前方。