单词prearrangement
网络: 事先性；预定；实现约定
Responsible for management and maintenance of conference rooms like projector setting, water and document prearrangement etc.
负责会议室的管理及维修，例如投影机设置，分水和分发文件。
The second chapter mainly introduces the prearrangement knowledge and the basic hypothesis of the model.
第二章主要介绍了预备知识和本文模型的基本假设。