a.

1. 需负责任的，承担责任的[F][（+for/to）]
   Politicians are responsible to the voters.

   政治家应对选民负责。

   She is my child, and I am responsible for her.

   她是我的孩子，我对她负责。

2. 作为原因的[F][（+for）]
   Heavy rains were responsible for the shortage of vegetables.

   大雨是蔬菜短缺的原因。

   Bad weather is responsible for the poor crop.

   坏天气是收成不好的原因。

3. 认真负责的；可信赖的
   We should give the job to a responsible person.

   我们应将该工作委托给一个有责任心的人。

4. 责任重大的，重要的
   She holds a very responsible position within the company.

   她在公司的责任重大。

   Mr. March held a responsible position.

   马奇先生担任过要职。

5. 有责任感的

adj.

1. having an obligation to do something, or having control over or care for someone.
2. being the primary cause of something and so able to be blamed or credited for it.
   ▸ (responsible to) reporting to; answerable to.
   ▸morally accountable for one's behaviour.
3. (of a job or position) involving important duties or decisions or control over others.
4. capable of being trusted.