快速答案
durar 表示事件或事物持续多久；demorar 表示行动或某人需要多久。
可靠的方法是先判断这个词在句子里的功能，再翻译。
每个词的作用
durar
to last
Use durar for the total length of an event, object, or condition.
demorar
to take time
Use demorar for the time needed to complete an action or reach a result.
如何选择
- durar: Choose durar if the sentence points to the total length of an event, object, or condition.
- demorar: Choose demorar if the sentence points to the time needed to complete an action or reach a result.
例句
A reunião durou uma hora.
The meeting lasted one hour.
Demorei uma hora para chegar.
It took me an hour to arrive.
常见误区
A film dura two hours. A person demora two hours para assistir if that is how long the action takes.
放到语境中练习
从你的真实生活中选一个句子，写两遍：一次用 durar，一次用 demorar。如果两个版本都可以，说明意思怎样变化。