That heritage, though, can be difficult to define.
In other instances, though, "fraud" can be difficult to define.
But experts say the term "assistance" can be difficult to define.
Decentralised organisations raise liability issues as ultimate responsibility may be difficult to define.
This is the most general sense of a term that can be difficult to define.
However, for many species that use estuaries, dependency may be difficult to define.
It would be difficult to define the restrictions upon this power of control and keep it efficient.
It can be difficult to define AI, and even the proper test of artificial intelligence is up for debate.
It might be difficult to define precisely the exact courses and components that comprise a liberal arts education.
Beauty may be difficult to define, he says, but it is real and its influence is vast.
Opponents of the plans say the distinction between commercial and private use would be difficult to define, making enforcement of the plan a challenge.
