Sentence examples for it was very difficult to observe from inspiring English sources

Six of the seven synagogues of Kazimierz were no longer in use and with too few people to sustain Jewish bakeries, restaurants or cultural centres, it was very difficult to observe a Jewish way of life.

In the case of silica 7, it was very difficult to observe the very small crystalline ZrO2 particles in the HRTEM, but careful analysis of the electron diffraction pattern clearly indicates that polydispersed ZrO2 particles are present.

That's because it's very difficult to experimentally observe the protein's molecular machinery in action.

It is very difficult to suggest a univocal interpretation of the observed data.

It is very difficult to.

was very difficult to access.

However, it is often very difficult to observe a system of collective problem solving by observing every individual action.

"It was very difficult".

"It was very difficult economically.

"It was very difficult material.

So it was very difficult.