求翻译：眼看天气越来越热，家里窗帘、床品、沙发面料是不是该换换清洁而崭新的了？想在这个炎夏知“材”善用，不如分些精力来一探究竟。是什么意思？

It is getting hot, home curtains, bedding, sofa fabric is that a change of clean and brand new? In the summer knows "material" use than some effort to find out.