常见例句雙語例句This paper introduces how to dismantle yarding tractor loading board, install trestle pole and use tightwire and chain wheel to load and unload cargo.本文介紹如何拆下集材拖拉機搭載板，安裝架杆，利用絞磐機、鋼索及架杆滑輪裝卸貨物。 返回 trestle board