To apply a transparency to a selected object, drag across the object.
To adjust the position and progression of the transparency, drag the handles and move the slider.
We will use the Transparency tool to create a reflection of the train on the background.
Zoom in on the train.
Click the Freehand Mask tool and create a mask around the train.
Press Ctrl+C and Ctrl+V to create a copy of the train.
Press Ctrl+R to remove the mask.
Drag the top handle of the duplicate downwards to create a reflection.
With the copy of the train selected, click the Transparency tool.
Drag to apply a transparency gradient to the object.
Press Enter to apply the effect.