His ideas were lumped together, making it difficult to identify which were original.
It can prove difficult to identify the payer of electronic payments.
The cycle of abuse can be difficult to identify at first.
Her essay's wordiness made the main argument difficult to identify among the extra details.
The reason for this diversity of supply is difficult to identify.
Therefore, it is difficult to identify the exact number of companies.
Worse, it will be very difficult to identify them afterwards.
Pire, il sera très difficile d'identifier chaque cale par la suite.
Jewellery often has significant value and can be difficult to identify.
Les bijoux ont souvent une valeur élevée tout en étant difficiles à identifier.
In this case it is more difficult to identify the perpetrator.
Dans ce cas-là, il va être plus difficile d'identifier le coupable.
Such problems have thus become much more insidious and difficult to identify.
Ces phénomènes n'en sont devenus que plus insidieux et difficiles à identifier.
This long wait phase often makes it difficult to identify the cause.
Cette phase de latence longue souvent rend difficile d'identifier la cause.
She hunts and brings small prey, which are difficult to identify.
Elle part chasser et ramène de petites proies, difficiles à identifier.
It's also often difficult to identify the families they come from.
Il est aussi souvent difficile d'identifier les familles d'origine.