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1·Deck the halls with green branches.

用绿树枝把大厅装饰一下。

2·The post-tensions prestressed beams are disposed for large space such as exhibition halls, reporting halls and studios, while the steel truss floors are formed by steel bar truss deck.

根据材料优缺点、施工特点等进行多方案分析比较，确定展厅、报告厅、演播室等楼盖结构选用后张有粘结预应力混凝土梁，钢桁架结构楼层采用钢筋桁架组合楼板。