1、屁股的英语单词是：butt，英 [b?t] 美 [b?t]。
2、他一屁股坐下来，打开了电视。He just plonked himself down and turned on the TV。
3、他们伴着音乐扭动屁股，有节奏地跳舞。They danced rhythmically, swaying their hips to the music。