If you say that something is predetermined, you mean that its form or nature was decided by previous events or by people rather than by chance.
例句
The Prince's destiny was predetermined from the moment of his birth...从出生的那一刻起，王子的命运就已经被预先决定了。The capsules can be made to release the pesticides at a predetermined time.可以使这些胶囊在预定的时间释放杀虫剂。
英英词典释义
Adjective
1. set in advance;
"a preset plan of action""at a predetermined time"