Sentence examples for existence was difficult from inspiring English sources

Li2CO3 may still be present on the electrode after 50 cycles, but confirming its existence was difficult because the major FT-IR peaks of Li2CO3 are overlapped by the large peaks of the organic materials and Li2O2.

There may be channels that pass anions such as Cl−, but their existence is difficult to prove.

The existence of arcs was difficult to explain because the laws of motion would predict that arcs would spread out into a uniform ring over short timescales.

The decision to leave their Los Angeles-area existence was so difficult that the Ledermans went to a life coach to help them sort through the ramifications of their choice.

As its action is the expression of its existence, it is difficult to confine its existence to the limited space that it is supposed to occupy according to its precise shape and size.

Moreover, with the existence of undercutting effect, it was difficult to ensure the fill factor locates at 0.5.

The definition of the word 'necessity' should be understood as a compulsion for the animal to evolve failing which, the very existence would be difficult.

Before long, it was difficult to imagine an existence in which the idea of travelling through time didn't exist.

In the first three years of MBDS existence, when mutual trust was not strong, sharing of outbreak information was difficult.

"It was difficult to judge why people were a little threatened with my existence.

If the 'struggle for existence' is particularly difficult, few of them (if any) will survive, so fecundity alone is not a virtue.