action introducing legal proceedings

例句：

1. 1. The teacher's action in class was very impressive.
   老师在课堂上的行为非常令人印象深刻。
2. 2.The company's decision to cut back on spending acted as a warning to investors.
   公司决定减少开支，对投资者发出了警告。
3. 3.The new policy will have a significant effect on the market action.
   新政策将对市场行为产生重大影响。