椅背

1.A chair consists of a seat with a back.

椅椅座和椅背构的。

2.Sonny tilted back in his chair.

桑尼坐在椅里, 斜靠着椅背。

3.The tobacconist on the other side of the street brought a chair out on to the pavement in front of his door and sat astride it, resting his arms on the back.

对面人行道上，卖烟的搬出一把椅，倒在门前，双腿骑上，两只胳膊在椅背上。