Examples

to decide on {or} upon sth

决定某事 → decide

to decide a case on its merits

根据是非曲直断案 → merit

The employer must draw up a plan to decide who will be kept on.

老板必须拟出一份计划来决定谁将留下。

定方针

decide on a policy → 定

定都北京

make Beijing the capital; decide on Beijing as the capital → 定都

决定下次碰头的时间

decide on the time of the next meeting → 碰头

根据事情本身的是非曲直进行裁断

decide the case on its merits → 是非曲直

我们必须尽快定计划。

We must quickly decide on a plan. → 定