Sentence examples for it is difficult to enhance from inspiring English sources

However, it is difficult to enhance the modeling ability of extreme learning in disposing the high-dimensional noisy data.

However, for conventional air-cooled absorption refrigeration systems, it is difficult to enhance the heat and mass transfer process in the falling film absorber, and may cause problems, for example, remarkable increase of pressure, temperature and concentration in the generators, risk of crystallization, acceleration of corrosion, degradation of performance, and so on.

It is difficult to enhance a picture with a lower resolution.

In particular, if RCA concrete is proportioned according to the conventional American Concrete Institute (ACI) method, it would be difficult to enhance its properties such as the modulus of elasticity, drying shrinkage, and freeze-and-thaw resistance (Fathifazl 2008; Fathifazl et al. 2009; Abbas et al. 2009).

However it is difficult to maintain and enhance compliance with hand hygiene guidelines.

Looking back at the Iraq and Afghanistan wars, it is difficult to argue that they did more to enhance the security of Americans than they did to damage it.

Reduced wind speed in urban habitats enhances aboveground growth, but it is difficult to pinpoint the underlying physiological mechanisms.

It is difficult to watch.

It is difficult to express how difficult it is.

"It is difficult to get her appointment.

It is difficult to accept".