Давид долгое время досадовал на Дору и думал, что она могла бы проявлять некоторый интерес к хозяйству, но потом понял, что он не должен требовать от неё того, чего она не может делать
David has long been annoyed at the Douro and thought it might be of some interest to the au pair, but then realized that he should not ask her what she can do
David has long vexed with Dora and thought it might be of some interest to the economy, but then I realized that he should not demand from it what it can not do
David for a long time, feeble at the Douro - and thought that it could be some interest in agriculture, but then realized that he should not to require it, what it can do