definite event

例句：

1. 1.The decision is definite.
   决定是确定的。
2. 2. I am definite about my future plans.
   我对我的未来计划是确定的。
3. 3. The task is definite, and we need to start working on it immediately.
   任务是确定的，我们需要立即开始工作。