Sentence examples for this is usually explained from inspiring English sources

This is usually explained as being for family reunion purposes, but most travellers are not all that interested in their relatives in China.

This is usually explained through a larger proportion of tenanted land, as technological progress has allowed production levels to be maintained with a smaller workforce.

This is usually explained by Hergé's "naivety", as an author of children's comics (a defence also used for P.G. Wodehouse).Alas, none of those arguments survive a reading of a biography of Hergé by Philippe Goddin, published in 2007.

This is usually explained by the hubs being the nodes that are primarily responsible for maintaining overall connectivity.

And there is some empirical evidence to support this claim.[28] This is usually explained by the hypothesis that the benchmarks against which people measure their comparative well-being are, in some (possibly metaphorical) sense, local.

This is usually explained in terms of trophic factors, such as hormones.

But that is usually explained just by the weakness of legal and political institutions.

This paradox is usually explained by differences in prion conformation.

The association between death and age is strongly related with increased fatality in older pedestrians, in agreement with many previous studies (Chang 2008; Henary et al. 2006; Kim et al. 2008; Mohamed et al. 2013; Tefft 2013); this association is usually explained by the increased frailty associated with ageing (Kim et al. 2008; Tarko and Azam 2011).

This phenomenon is usually explained in terms of refractoriness of the neural generators underlying the N1-P2 response [5], [10], [11], [12], [13], [14], [15].

This result is usually explained by the asymmetrical migration of European colonizers, which principally consisted of males.