There would be great difficulty in proving its truth: we may safely conclude that very many of the most strongly marked domestic varieties could not possibly live in a wild state.
Oso zail legoke horren egiazkotasuna frogatzen: segurtasunez hel gaitezke honako ondorio honetara, hots, nabarmenki markaturiko etxe-aldaki asko eta asko basa-egoeran agian ezin izanen direla bizi.