“保管的”的英语可以翻译为：custodial ...

我负有确保这些包裹得到妥善保管的重大责任。I had a huge responsibility to ensure these packets remained in safe hands.你没权挥霍委托你保管的钱.You have no right to play ducks and drakes with money that has been entrusted to you.它们列于一卷严格保管的缩微胶卷上.They are ...