In other words, the act of pulling it back repeatedly from my short-term or 'working' memory over the course of half an hour seems to have fixed it in my memory more or less permanently.

换句话说，在半小时内将其从我的短期或“工作”记忆中反复拉回的行为似乎或多或少地将其永久地固定在我的记忆中。