The Translate function sets the position from which the 3-D scene is viewed. The arguments give the amount to move from the current position in the x, y, and z direction.
Translate (x, y, z)
For example,
Translate( 0.0, 0.0, -2 );
moves the origin two units in the negative z direction.
Initially, the origin and camera were at the same place. Now, the camera can see the origin because the camera faces down the negative z axis.