N a transverse beam, joist, etc 横档
Brace those sagging shelves with more crosspieces.
多用横档加固那些下陷的架子。
He was holing the fence posts to take the crosspieces.
他在栏柱上打洞以便装上横档。
The crosspieces of the ladder are never designed for rest, but for supporting the foot when the other steps for a higher level.
梯子上的横档从来不是用来休息的，只是为了在一只脚迈向更高处时，另一只脚可以有一个支撑。
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