单语范例（未经PONS编辑处理）
The station has two side platforms, on either side of the twin track main line.
en.wikipedia.org Also, in a departure from normal main line steam operation railway practice, the train was, where necessary, given priority over normal train services.
en.wikipedia.org To the south was a long basin, which left the main line opposite the north basin.
en.wikipedia.org In 1987 the yard was rationalised to main line and crossing loop, but it was not until 1991 that the second platform was added.
en.wikipedia.org The main line ran 32 mi with another 2.5mi km of sidings and turnouts.
en.wikipedia.org