他们将地板打蜡并擦亮。
在p点的映像之后，光的光束对于被擦亮的地板传播并反映出好象地板也是一面镜子。
After reflection at the point p, the beam of light travels towards the polished floor and reflects off it as if the floor is a mirror.
打扫厨房，给地板打蜡，擦家具，清洁地板，擦亮浴缸，然后打理我自己，吸尘，晾衣服，边跑边啃三明治，一恍就到了下午。
Sweep the kitchen, wax the floor, Scrub the woodwork, clean the door, Scour the bathtub. then myself, Vacuum carpets, straighten shelves, Eat a sandwich on the run, Now my afternoon's begun.
打扫厨房，给地板打蜡，擦家具，清洁地板，擦亮浴缸，然后打理我自己，吸尘，晾衣服，边跑边啃三明治，一恍就到了下午。
Sweep the kitchen, wax the floor, Scrub the woodwork, clean the door, Scour the bathtub. then myself, Vacuum carpets, straighten shelves, Eat a sandwich on the run, Now my afternoon's begun.
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