开始准备屋面梁的工作，调整檩托的长度的翻译：Began to prepare for roof beam working, adjust the Purlin tray length 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Roof beams began to prepare the work, adjust the length of purlin care

Began to prepare for roof beam working, adjust the Purlin tray length

Starts to prepare the roofing Liang's work, adjusts length which the purlin holds

Mr Leung's work began to prepare for roofing, Rum and adjust the length

Began to prepare for roof beam working, adjust the Purlin tray length