We have to take some measure to defense. 我們不得不采取預防措施。
Consider as many preventive measures as possible. 考慮盡可能多的預防措施。
Experts reminded the public to choose travel must take effective preventive measures. 專家提醒市民，選擇出游一定要采取有效的防護措施。
By instituting regular predictive and preventive maintenance, you can spot trouble before it happens and greatly reduce the chances of system failure. 通過設立有秩序的預測和防護措施，可以在故障出現之前就發現隱患，大大降低系統故障的發生率。
