off our guard meaning in Chinese

adj.不警戒,不警惕,不提防

Examples

1. i also want to take this opportunity to say that obviously even with this lifting of travel advisory, we in government, and also the hong kong community, should not let off our guard
   市民和政府都需要有很高度的警觉，因为疫情还未完结，我们仍然要做很多功夫去对抗ＳＡＲＳ病毒。