n.(半边)屁股；臀部
I discovered a lump on my buttock yesterday, What shall I do? 我昨天发现臀部有个硬块,该怎么办呢?
When embrace her, I can feel her plump buttock . 当拥抱她的时候，我可以感觉到她丰润的臀部。
The sciatic nerves:神经紧张." target="_blank">nerve is actually a cluster of nerves that run from the lower back in the buttock area down the back of the leg 坐骨神经实际上是从臀部尾脊骨到腿后的一组神经群。
n.（常复数）臀部
