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Author: Englishtainment upload
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Welsh[cy]
Gallwch fynd mewn awyren o Gaerdydd i Barcelona, dros 700 milltir i ffwrdd, am ddim ond £80. Fodd bynnag, os ydych am deithio i'r Trallwng mewn trên, bydd yn costio £40 i chi.
English[en]
You can get a flight from Cardiff to Barcelona, over 700 miles away, for just £80. However, if you want to travel to Welshpool by train, it will cost you £40. So, there are issues that are sometimes beyond our control, where certain modes of transport that produce much carbon are comparatively cheap.