Construction workers had to spend the night ramming iron girders into place to support the building.建筑工人不得不花了一晚上用力把支撑大楼的铁梁安装好。You'll have to alternate. One of you can use the room in the mornings, and the other in the evenings.你们俩得轮着来了，一个早上用这间房，另一个晚上用。