The contractor emailed revised drawings showing steel trusses for the new warehouse roof.

承包商以電子郵件寄來修改後的圖面，顯示新倉庫屋頂採用鋼製桁架。

During the site meeting, engineers confirmed that each truss could support the added solar panels.

在現場會議中，工程師確認每一座桁架都能承受加裝的太陽能板。

The shipment of prefabricated roof trusses was delayed at the port for two days.

預製屋頂桁架的貨物在港口延誤了兩天。