However, it is difficult to isolate and assess this bias.
It is extremely difficult to isolate the prime cause of the stoppages.
Also, in some cases the crystal structure of an organolithium species can be difficult to isolate.
The method uses the synthetically produced compound instead of a naturally occurring material which occurs in only minute amounts and is difficult to isolate.
La méthode utilise le composé produit synthétiquement plutôt qu'un matériau qu'on trouve dans la nature mais en quantités infimes et qui est difficile à isoler.
These degrees of freedom are ubiquitous at the atomic scale, but it is difficult to isolate and control them with precision.
Ces degrés de liberté sont omniprésents à l'échelle atomique mais il est difficile de les isoler et de les contrôler avec précision.
But conversely, difficult to isolate!
One reason is that the stomach is difficult to isolate and target.
Otherwise, they are often cumbersome and difficult to isolate.
In this new narrative, it is difficult to isolate a single case.
Dans cette narration nouvelle, il est difficile d'isoler un cas.
It is therefore very difficult to isolate purely tourist projects.
Il est donc très difficile d'isoler les projets purement touristiques.
It is usually difficult to isolate the effects of one new source.
Il est habituellement difficile d'isoler les effets d'une nouvelle source.
It is very difficult to isolate the defects found.
Il est très difficile d'isoler les défauts constatés.
It's pretty difficult to isolate certain factors.
Il est très difficile d'isoler certains facteurs.