"backside" in Chinese (Simplified)
屁股背面
Definition
“Backside” 通常指的是某人的臀部（口语用法），也可以指某物的背面。
Usage Notes (Chinese (Simplified))
“Backside” 指人的臀部时较口语、带幽默感，指物体背面则中性。比 “butt” 更委婉。正式场合最好避免用于描述身体部位。
Examples
He fell and landed on his backside.
他摔倒了，坐到了**屁股**上。
Please write your name on the backside of the paper.
请把你的名字写在纸的**背面**。
The dog's backside was covered in mud.
狗的**屁股**上沾满了泥。
I slipped on the ice and bruised my backside—ouch!
我在冰上滑倒，摔伤了**屁股**—哎呀！
You missed a spot painting the backside of the chair.
你忘记刷椅子的**背面**了。
That joke had everyone laughing their backside off.
那个笑话把大家都逗得笑掉了**屁股**。