Hard facts have been difficult to ascertain in this short period.
It is difficult to ascertain the effects of this trade on national welfare.
That can't be the reason cause was difficult to ascertain.
It also often makes its size and distance visually difficult to ascertain.
It was extremely difficult to ascertain what proportion of asylum-seekers had been tortured.
Es extremadamente difícil averiguar qué proporción de solicitantes de asilo ha sido torturada.
It is also a fact that it is not difficult to ascertain how much weaponry a country needs for legitimate purposes.
También es un hecho que no resulta difícil averiguar cuántas armas necesita un país con fines legítimos.
In practice, it has been difficult to ascertain which services are permitted.
En la práctica ha resultado difícil determinar qué servicios están permitidos.
Sometimes, it is difficult to ascertain the actual meaning of plain text.
A veces, es difícil determinar el significado real de texto sin formato.
It is quite difficult to ascertain the exact amount of claims under arbitration.
Resulta difícil determinar la cuantía exacta de las reclamaciones sometidas a arbitraje.
It is more difficult to ascertain the method of his revision of xii.
Es más difícil determinar el método de su revisión de xii.
Therefore is difficult to ascertain which are actually his.
Por lo tanto, es difícil determinar cuáles son realmente suyos.
It's very difficult to ascertain the cause of death.
Es muy difícil determinar la causa de la muerte.
So exact time of death was difficult to ascertain.
Así que el tiempo exacto de la muerte era difícil de determinar.