joist

US /dʒɔɪst/
UK /dʒɔɪst/
"joist" picture
1.

擱柵, 托樑

a length of timber or steel supporting part of the structure of a building, typically arranged in parallel series to support a floor or ceiling.

:
The floorboards were nailed directly to the wooden joists.
地板直接釘在木製擱柵上。
We need to replace some of the rotten joists in the old house.
我們需要更換老房子裡一些腐爛的擱柵