She explains that volcanoes are difficult to predict because they are complicated.
Unsettled weather makes it difficult to predict what will happen tomorrow.
However, the natural course of the disorder is difficult to predict.
The bandwidth needed for video connections is difficult to predict.
Her altering mood made it difficult to predict her reaction to the news.
It is difficult to predict what will happen in the future.
The latter, of course, is very difficult to predict.
Ces réunions sont, à l'évidence, très difficiles à prévoir.
The future performance of share prices can be difficult to predict.
La performance future des cours des actions peuvent être difficiles à prévoir.
But the true effects of the legislation are difficult to predict.
Cependant, les effets réels de la loi sont difficiles à prévoir.
However, it's extremely difficult to predict when that might happen.
Cependant, il est extrêmement difficile de prédire quand cela pourrait arriver.
So it is very difficult to predict death with any certainty.
Il est donc très difficile de prédire le décès avec certitude.
It is very difficult to predict the time of that change.
Il est très difficile de prédire le temps de ce changement.
During this stage, cycles are very difficult to predict.
Pendant cette étape, les cycles sont très difficiles à prévoir.