卫生间是建筑设计中非常重要的功能空间，其布局和材料选择需遵循严格的规范。根据国际标准，公共卫生间应设置无障碍设施，包括宽度不小于900mm的轮椅通道和高度450mm的扶手。给排水系统必须采用防腐蚀管材，建议使用PPR或

Here is a short English passage describing a bathroom:The bathroom is a functional and personal space in the home. It typically features a sink, toilet, and shower or bathtub. The sink provides a place to wash hands, brush teeth, and freshen up. The toilet allows for private bodily functions. The sh