He made a comfy backrest for the children at story hour.

他让孩子们在故事时间有很舒服的靠背。

Place your back all the way to the backrest.

把你的背紧紧靠在椅背上。

Anthony and Dick converted a long box into a backrest and found a board dry enough for Gloria to sit on.

安东尼和迪克将一个长箱子改装成靠背， 并找到了一块干燥得足以让格洛丽亚坐下的木板。