touch on a topic(There is another topic I'd like to touch on... – Мне хотелось бы коснуться и другой темы... • She also touched on the Dogon tribe, who had advanced astronomical knowledge that may have come from ETs, as well as such topics as crop circles, lunar & solar anomalies, and stargates. (coasttocoastam.com)ART Vancouver)
touch on(Robinson also touched on an odd photograph of a "winged creature" or fairy, the Green Lady apparition at a Scottish castle, and haunting phenomena at Chingle Hall in Lancashire.coasttocoastam.comART Vancouver)
