Translation of "trusteeship" into Chinese

I would just remind him, however, that the time of trusteeship is over as well.

然而,我要提醒他,托管的时代也已结束。

The early experiments of the mandates and trusteeship systems provide clear historical evidence to that effect.

委任统治和托管制度的早期尝试为此提供了明确的历史佐证。