Escape and avoidance of the onset of pain and exacerbations of pain can be difficult to distinguish in certain circumstances.
It implies that for materials like aluminum 24S-T alloy, it could be difficult to distinguish between cleavage and slip under certain combinations of stresses (area between points A and B in Figure 7).
Language change may be motivated by "language internal" factors, such as changes in pronunciation motivated by certain sounds being difficult to distinguish aurally or to produce, or through patterns of change that cause some rare types of constructions to drift towards more common types.
While current smoking is accurately identified based on blood mRNA levels, smoking cessation for more than one year is accompanied by a "normalization" of the expression of certain mRNAs, making it difficult to distinguish former smokers from never-smokers.
It is usually difficult to distinguish between true and false cysts on imaging, but certain characteristics may be useful in differentiating between them.
Secondly, there is a degree of functional indeterminacy between certain ranks this often makes it difficult to distinguish between verbal group and clause, and between verbal group complex and clause complex.
The iconography of Kubera and Pancika is so similar that in certain cases, A. Getty comments, it is extremely difficult to distinguish between Pancika and Kubera.
The patterns of FLT uptake in C6 and C6/ACNU were difficult to distinguish in the very early stage of the treatment, though it was reported that FLT uptake well correlated with proliferation in certain conditions.
