seat [siːt] 座位
belt [belt] n. 腰带;皮带
waist [weɪst] 腰;腰部
Please take a seat.(= sit down)
He put his shopping on the seat behind him.
There were no seats left so I had to stand up.
Tie a belt on your waist.
Was she wearing a seat belt?
She wore a beautiful belt around her waist.
He put his arm around her waist.