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Discover LudwigThe phrase "are a practical challenge" is correct and usable in written English.
It can be used to describe something that presents difficulties or obstacles in a practical context.
Example: "The new regulations are a practical challenge for small businesses trying to comply with the updated standards."
Alternatives: "pose a practical difficulty" or "represent a practical obstacle".
Exact(1)
The illusion that geological features extend straight back into an outcrop is exciting because it may be revealing about previously unrecognized underlying visual processes; however, such illusions are a practical challenge for STEM education.
Similar(59)
There is a practical challenge too, for readers have varying degrees of prior knowledge.
Refrigerant flow mal-distribution is a practical challenge in most microchannel heat exchangers (MCHXs) applications.
Measurement of fish length and assessment of behavior are important to fish farming, but it can be a practical challenge.
Unfortunately, during conventional polymer processing (e.g., injection molding), the preservation of pre-shear induced orientation is a practical challenge because oriented chains are prone to relax as far as possible.
It is traditionally reported as a function of the deviator and confining stresses, which can be a practical challenge in selecting the appropriate resilient modulus value for a pavement design.
Scalability is a practical challenge for mesh backbone.
Firstly, there is a practical challenge: how to create from them engaging television which entertains as well as informs and which, crucially, the politicians will accept.
Third, effective management of a large data set is also a practical challenge.
Although buprenorphine is quite effective, a practical challenge is finding a way to ensure that patients continue taking this medication as prescribed, especially since they do not have to undergo the type of daily monitoring necessary for methadone treatment.
We are collectively facing a practical challenge: how to describe/represent/study microbial evolution and systematics knowing there are frequent LGTs.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com