take action和take actions to do sth.有什么不同吗?

take action
KK:[ ]
DJ:[ ]
1.采取行动
We have to take action to stop them.
我们得采取行动来制止他们.
2.提出诉讼
He took action against Jack.
他控告杰克.
3.开始起作用
The medicine will not take action for two hours.
这药在两小时后才会起作用.