electric wire conduit underneath the car

例句：

1. 1.The electric wire conduit is used to protect the electrical wiring in the walls.
   电线导管用于保护墙壁中的电气线路。
2. 2. The electric wire conduit was installed by a professional electrician.
   电线导管是由专业电工安装的。
3. 3.The electric wire conduit is easy to install and can be hidden behind the wall.
   电线导管易于安装，可以隐藏在墙后。