The phrase "become difficult to achieve" is correct and usable in written English.
You can use it whenever you want to describe a task that is becoming more and more challenging to complete. For example, "With the new regulations in place, our deadline has become difficult to achieve."
But for the teams that build and race the cars, and for the automakers that sponsor them, gaining a performance advantage is an obvious goal — a goal that has become difficult to achieve on a playing field leveled by mandate.
Without followers, goals become difficult to achieve.
These goals become difficult to achieve in case of BSI due to multi-drug resistant pathogens with high MICs to antimicrobials, in the most severe patients where low antibiotic concentrations are common, and when the source control is incomplete or impossible.
One option is of course to continue use all of these services in isolation but the challenge with this is that it becomes difficult to achieve economy of scale, the organisation will become fragmented, data may not be as secure and no one will know what to do when an employee leaves or changes role.
When it becomes difficult to achieve the weekly target owing to unexpected heat consumption, the weekly heat consumption target is corrected downward for the subsequent weeks.
This, however, becomes difficult to achieve in distal humeral shaft fractures owing to the limited space available distally, as well as the curved shape of the distal humerus when approaching anteriorly and the presence of the olecranon fossa posteriorly (Fig. 1).
Once an acceptable score for hospital standards has been achieved it would become difficult to develop successful initiatives that lead to further improvement [ 6].
LONDON — For a large number of young adults in Britain, homeownership has become increasingly difficult to achieve, viewed as a distant goal attainable only later in life, if at all.
