单相二，三极暗插座安装的翻译：Single-phase two-, three-pole concealed socket installation 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

Single-phase two or three very dark socket

Single-phase two-, three-pole concealed socket installation

Single-phase two, three extremely dark plug installments

single-phase 2, and 3 very dim socket installed

Single-phase two-, three-pole concealed socket installation