The phrase "and challenging to implement" is correct and usable in written English.
It can be used when discussing a task, idea, or project that is difficult to put into practice.
Example: "The new policy is beneficial for the organization, but it is also complex and challenging to implement."
Alternatives: "and difficult to execute" or "and hard to apply".
These deaths are preventable with access to clean and safe water, but capital costs and maintenance requirements for large-scale treatment systems are prohibitive and challenging to implement in remote or distributed communities.
So yes, it is true that the solutions can be complex to design and challenging to implement.
Such comprehensive care is often limited and challenging to implement in routine clinical practice.
There is no doubt that PCSTs are complex and challenging to implement but we do not believe that adding a requirement for consultation with patient groups will render them unmanageable.
Large-scale manipulative experiments and evaluation of management strategies in the context of conceivable responses in the fishery (see Walters 1994) are logistically and politically challenging to implement, and would be met with resistance from fishers without adequate compensation or a clear sense of a perceived longer-term benefit.
Unfortunately, the current PCR-based methods are beyond the capacity of most malaria-endemic countries because they require sophisticated laboratory infrastructure and training which makes these techniques expensive and technically challenging to implement in simple clinical laboratories or field settings.
However, these kinds of policies have proven to be logistically and politically challenging to implement.
Although more time consuming and technically challenging to implement, the new approach is already proving to be more productive, not least in helping to win new work with clients that have a shared commitment to sustainability.
Inhibitors of efflux pumps, for example, have been discovered, and though challenging to implement in organisms with multiple redundant systems, are worthy of continued investigation.
This tunneling, together with the position service required for non-IP geographical unicasting, makes such a combined solution rather complex, and hence more challenging to implement, debug, and maintain.
Physically shearing DNA using ultrasound or microfluidic devices is less attractive as it reduces the amount of target that can be amplified by PCR and can be challenging to implement in high-throughput without specialized equipment.
