trestles
n. (擱桌面等的)支架( trestle的名詞複數 ); 擱凳; 擱板桌; (腳手架等的)棧架結構
A trestle is a wooden or metal structure that is used, for example, as one of the supports for a table. It has two pairs of sloping legs which are joined by a flat piece across the top.
The girders are carried on trestles.
這些大梁是由支架撐著.