青云翻译

Foot ladder should be cleaned from top to bottom, from the ends to the central sweep, do not forget that the staircase facade. Once every two hours

Ladder walk time from top to bottom, by sweeping both ends toward the Center sweep, do not forget the stairs elevations. Once in every two hours

Sweeps clear when the walk ladder should top-down, to central sweep by the both sides, do not have to forget the staircase sets up the surface.Every two hours one time

Cleaning should be from top to bottom when walking ladder, from both ends, we should not forget that the central sweep the stairs. Once every two hours

Ladder walk time from top to bottom, by sweeping both ends toward the Center sweep, do not forget the stairs elevations. Once in every two hours