However it is extremely difficult to ascertain that part of the royalties.
It's very difficult to ascertain the cause of death.
It is difficult to ascertain that based on the number of veterans.
Would you agree that it would be difficult to ascertain?
It is thus difficult to ascertain the exact numbers of those missing.
Hard facts have been difficult to ascertain in this short period.
It was also difficult to ascertain the number of detainees.
Il est également difficile de déterminer le vrai nombre des détenus.
It is more difficult to ascertain the method of his revision of xii.
Il est plus difficile de déterminer la méthode de sa révision du xii.
Intentions are a great deal more difficult to ascertain.
Les intentions sont abstraites, bien plus difficiles à déterminer.
In practice, it has been difficult to ascertain which services are permitted.
Dans la pratique, il a été difficile de déterminer quels étaient les services autorisés.
It is quite difficult to ascertain the exact amount of claims under arbitration.
Il est extrêmement difficile de déterminer le montant exact des réclamations qui doivent faire l'objet d'un arbitrage.
It can prove difficult to ascertain the full scope and cost of such environments.
Il peut donc être difficile de déterminer l'étendue et les coûts d'un tel environnement.
As mentioned previously, the aetiology of chronic end-stage renal disease is frequently difficult to ascertain.
Comme mentionné précédemment, l'étiologie de l'insuffisance rénale chronique dépassée est souvent difficile à déterminer.