n.

1. 刺激；推动；动机
   The fear of failure was the motivation for Jane's achievements.

   害怕失败是促使简有所成就的动机。

2. 积极性；干劲
   Schools try to increase students' motivation to read.

   学校努力帮助学生积极阅读。

3. 行动方式

n.

1. a reason or reasons for doing something.
2. desire to do something; enthusiasm.