椅背

A chair consists of a seat with a back.

子是和背构的。

Sonny tilted back in his chair.

桑尼坐在子里, 斜靠着背。

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，卖烟的搬出一把子，倒在门前，双腿骑上，两只胳膊在背上。