◆safe in the knowledge that … or secure in the knowledge that …<正式>确信…
You can let your kids play here, safe in the knowledge that they won't get sunburn.你可以放心让你的孩子在这里玩, 确信他们不会晒伤。
I arrived late, safe in the knowledge that no demonstration leaves on time.我很晚才到, 因为我确信没有示威游行队伍能按时出发。