Definition
It is wiser to take action to prevent a problem from occurring than to try to fix it after it has arisen.
预防胜于治疗；防范于未然。
Getting regular check-ups is a good habit, as prevention is better than cure.
定期进行身体检查是个好习惯，因为预防胜于治疗。
We should invest in cyber security because prevention is better than cure.
我们应该投资网络安全，因为预防胜于治疗。
Planning the trip ahead of time can save a lot of trouble, since prevention is better than cure.
提前规划旅行可以避免很多麻烦，因为预防胜于治疗。