bracket scaffold

例句：

1. 1.The engineer used a steel bracket to hold the heavy door open.
   工程师用一个钢托架来支撑沉重的门。
2. 2.The carpenter carefully fitted the wooden brackets onto the walls.
   木匠小心翼翼地将木托架安装在墙上。
3. 3. The scientist used a metal bracket to secure the equipment in place.
   科学家用一个金属托架来固定设备的位置。