他们已经开始装配柱子的底板的翻译：They have begun assembling a pillar of the backplane 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

They have begun to assemble the bottom column

They have begun assembling a pillar of the backplane

正在翻译，请等待...

They have already started assembling pillars of the plate

They have begun assembling a pillar of the backplane