Moira sat stiffly upright in her straight-backed chair.

莫伊拉直挺挺地坐在直背椅上。

She asked Sadie to sit on the straight-backed chair in the kitchen, and she put a large porcelain basin on the floor.

她让莎蒂坐在厨房直背的椅子上，然后她在地上放上一个大瓷盆。

Cutlery, as opposed to eating with your fingers; sitting up straight in a high-backed chair; these were innovations in the way people defined themselves at table in 18th-century Europe.

用刀叉，而不是用手吃饭，挺拔地坐在高背椅上，这是十八世纪欧洲人餐桌礼仪的变革。