1. 决定;抉择
When you make a decision, you choose what should be done or which is the best of various possible actions.
e.g. A decision was taken to discipline Marshall...
已作出对马歇尔进行处罚的决定。
e.g. The president said he'd made no firm decision on whether he would run for a second term in office...
总统说他还没有下定决心是否竞选连任。
2. 作决定;作抉择
Decision is the act of deciding something or the need to decide something.
e.g. The moment of decision cannot be delayed...
作出决定的时刻由不得耽搁。
e.g. This was a matter for decision by the individual.
这件事需要个人自己决定。
3. 果断;决断（力）
Decision is the ability to decide quickly and definitely what to do.
e.g. He is very much a man of decision and action.
他是一个遇事非常果断、行动极为迅速的人。