To shelve; to lay aside; to put on the shelf; to leave unused or neglected.
这份旧计划书虽然很有价值，但由于新的项目优先级更高，只能暂时置之高阁了
Although this old proposal is very valuable, due to the higher priority of new projects, it can only be shelved for now.
Next Idiom
To shelve; to lay aside; to put on the shelf; to leave unused or neglected.