Sentence examples for very difficult to define from inspiring English sources

The obstacles against her are still immensely powerful — and yet they are very difficult to define".

She calls it "a term often suspect in its uses, and very difficult to define".

"Value is, in any case, very difficult to define," Mr Kind said.

Mowaffak al-Rubaie, a Shiite politician who is Iraq's national-security adviser, told me, "He's very difficult to define.

"It's very difficult to define what is a man and what is a woman at this point," said Christine McGinn, a plastic surgeon who specializes in transgender medicine.

Capoeira is sometimes referred to as both a dance and a martial art, but I find it's actually very difficult to define.

"Social capital" is very important but difficult to define and analyze.

Table 9 The term 'sustainability' is very broad and difficult to define.

There is very limited literature regarding impact analysis on solid rubber anti-vibration systems as the true damping characteristics of rubber materials are very complex and difficult to define.

Reflux occurred at low frequency (3.4%) but appeared very specific, albeit difficult to define.

Notably, these estimates do not include IS elements, because the orthologous relationship for these very similar genes is difficult to define.