1、
2、
Children were not permitted to roam around the second and first floors of the White House.
孩子们不允许在白宫的二楼和一楼到处闲逛.
词典精选例句
3、
4、
The workers on the upper floors of the building commandeer the elevators first.
建筑高层的员工首先抢占了电梯。
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