knee rafter斜撑
rafter roof人字木屋顶
fly rafter飞椽
flying rafter飞檐椽;飞子
upper rafter脑椽
ceiling rafter顶棚搁栅
compass rafter轮椽;轮橼
rough rafter暗椽
N-COUNT（可数名词） Rafters are the sloping pieces of wood that support a roof. 椽子
From the rafters of the thatched roofs hung strings of dried onions and garlic.
从茅草屋顶的椽子上垂挂下一串一串的干洋葱和大蒜。