Sentence examples for difficult to be maintained from inspiring English sources

Roadways excavated in soft rocks at great depth are difficult to be maintained due to large deformation of surrounding rocks, which greatly influences the safety and efficiency of deep resources exploitation.

This idea is further corroborated by evidence showing that longer mental rotation times are needed for stimuli orientations corresponding to body part positions difficult to be maintained [13], [20], [21].

Albeit with high potential in the study of neurogenesis as well as cell replacement therapy, R-NSC is difficult to be maintained and propagated in culture.

The lack of critical niche components in culturing system is the major reason why most types of adult stem cells are difficult to be maintained and serially expanded in vitro.

Lifestyle interventions are difficult to be implements and maintain, and have failed to achieve effective glycemic control alone [ 12].

"It would be very difficult to see it being maintained".

Cork, which is not a synthetic, is handsome, but is difficult to maintain and is not exceptionally durable.

Unfortunately, by living with a facade that is difficult to maintain and is stressful to make decisions from daily...we set ourselves up for ultimate failure.

As the equipment required is costly and can be difficult to maintain, this strategy is not recommended.

"Family routines can be difficult to maintain when parents are working long hours and potentially unsociable hours," they write.

Such a diet is difficult to maintain, unless there's a community at work swapping cooking tips and "razzing" colleagues who they see fall off the wagon.