The police were able to take preventive action and avoid a possible riot.

警方及时采取防范措施，避免了可能发生的骚乱。

《牛津词典》

Europeans take melons for a preventive against seasickness.

欧洲人吃瓜作为预防晕船的方法。

《新英汉大辞典》

To move from a curative to a preventive approach.

从一种治疗途径走向预防途径。

youdao

They include making sure that every adult and child has a right to preventive medical services.

VOA: special.2009.07.21

"We estimate in WHO that over thirty million lives can be saved in the next ten years by simple measures -- reducing the level of salt by fifteen to twenty percent, reducing the amount of tobacco, and increasing the number of people who are at risk of a heart attack and stroke to be on simple preventive treatment."

VOA: special.2011.05.11

"Our preventive diplomacy will be central to our approach to a lot of issues."

VOA: standard.2009.10.15

This benefit is small, which is exactly what I would predict for a preventive measure in a low-risk population.

FORBES: Should Everyone Take Statins?

It's also important to recognize that even a preventive mastectomy is not a guarantee against cancer.

CNN: Jolie's choice carries risks along with benefits

The CPUC requires that all carriers have a preventive maintenance program and maintain a daily vehicle inspection report, Prosper said.

NPR: Limo Driver: Fire Took 3 Minutes To Claim 5 Lives