Legally, a person's last will and testament doesn't go into effect until after that person dies. Yet there is one kind of will that concerns both the living and the dead, which must go into effect before one dies: a living will.
法律上，「遺囑」要在死後才能生效，然而有一種囑託，同樣攸關死亡，卻是必須要在生前就生效的，那就是「醫囑」。