Difficult to maintain, the Labyrinth was neglected in the eighteenth century and finally destroyed in 1774.
MANY homeowners find it difficult to maintain the borders around the patio, driveway and sidewalks.
You don't stop building just because it is difficult to maintain the park.
If it cuts too much too soon, it will be extremely difficult to maintain the health of the sector.
Still, though, it is as difficult to maintain the focus, to maintain the pressure, and the energy".
As the complexity and amount of medical information keeps increasing, it is difficult to maintain the same quality of care.
At thousands of miles per hour, however, it is very difficult to maintain the right mixture of fuel and air inside the engine.
The Mayorgas have raised the children since then, even though it is often difficult to maintain the household on Mr. Mayorga's pay of $10.85 per hour.
However, as the Italian philosopher Antonio Gramsci suggests, it is difficult to maintain the optimism of the will in the face of the pessimism of the intellect.
Halsey said that since the Civil War it had been difficult to maintain the style of service to which cultivated Southerners were accustumed.
Analysts said that Internet retailing was so large — projected to be more than $120 billion this year — that it would be difficult to maintain the high growth rates.
