短語(yǔ)詞組短語(yǔ)precautionary area 警戒區(qū)precautionary requirement 預(yù)防性的需求precautionary balances 預(yù)防餘額precautionary principal 預(yù)防原則precautionary shutdown 預(yù)防性停車precautionary ways 防範(fàn)對(duì)策precautionary management 預(yù)防琯理precautionary patent 預(yù)告專利precautionary technology 防precautionary measure 預(yù)防措施；安全措施precautionary principle 預(yù)防原則；預(yù)警原則 返回 precautionary