Police in riot gear were in attendance as a precautionary measure.

身着防暴服的警察到场实施预防行动。

The local administration says the curfew is a precautionary measure.

该地方当局说宵禁只是一项预防措施。

He was kept in the hospital overnight as a precautionary measure.

为了谨慎起见，他被安排整晚留院观察。

According to the different status of anti-infection for Nematodirus, we suggest specific improving precautionary measures.

根据线虫抗感染的不同状态，我们建议采取具体改进的预防措施。

He thrust aside all precautionary advice.

他对一切事先忠告都置之不理。