Definition (方向)
With the rear part of something facing forward, or oriented in the opposite direction of what is usual or expected.
前后倒置
You've got your shirt on back to front, the tag is in the front.
你把衬衫前后穿反了，标签在前面。
He had his baseball cap on back to front, with the brim at the back.
他把棒球帽前后戴反了，帽檐在后面。
Please do not hold the book back to front, the cover should face forward.
请不要把书前后拿反，封面应该朝前。