求翻译：遮光。要是想在白天睡个舒适的午觉，最好为卧室选择一条具有遮光成效的窗帘，棉质或植绒面料的最好。而书房、餐厅内通常没必要太强的光线，可以选用百叶窗，方便于光线调节。是什么意思？

Shading. If I want to have a cozy NAP in during the day, it is best to select one for the bedroom curtains with shading effects, best of cotton or flannel cloth. In the study room, a restaurant is usually no need to be too strong light, you can select blinds, convenient for light regulation.