a.

1. 情急拼命的，铤而走险的
   A desperate man will stop at nothing to get what he wants.

   一个亡命之徒为了达到自己的目的什么事都做得出来。

2. 危急的；绝望的
   He was desperate when he lost all his money.

   当他丢了所有的钱时，他绝望了。

3. 极度渴望的[F][（+for）][+to-v]
   He was desperate for work to provide for a large family.

   他渴望有个工作，挣钱供养子女众多的家。

4. 极端的；险恶的

adj.

1. feeling, showing, or involving despair.
   ▸tried in despair or when everything else has failed.
2. extremely bad or serious:
   a desperate shortage.
3. (often desperate for/to do) having a great need or desire for something.
4. violent or dangerous:
   a desperate criminal.