Sentence examples for but difficult to maintain from inspiring English sources

Our data show that targeted chromatin repression of endogenous loci is attainable but difficult to maintain.

Another explanation for why there are so many small clades of halophytes is that salt tolerance may be a costly ecological strategy that is relatively easy to gain but difficult to maintain.

Longer nails are pretty but difficult to maintain.

Thus it appears that thalassemia patients may not base adherence on a health cost-benefit analysis of the necessity of chelation, especially with DFO, but rather recognize that chelation is absolutely necessary but sometimes difficult to maintain.

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

Improving microscopy is an alternative to using rapid diagnostic tests but is difficult to maintain.

But it is difficult to maintain earnings growth while spending heavily to develop new products, so the company's stock can fall, leaving it vulnerable.

"It's all very well, you can write off debt and use it to meet the aid target for a year and you've got a boost but it's difficult to maintain the 0.7%, so you can't do it every year because there isn't enough debt to write off – fortunately.

But it is difficult to maintain positive thoughts toward someone so mean-spirited.

In a different neonate with the R1623Q SCN5A mutation, mexiletine was initially effective in controlling QT prolongation, but it was difficult to maintain a therapeutic concentration, possibly due to poor absorption from the gastrointestinal track[24].

Haloquadratum walsbyi represents up to 80%% of cells in NaCl-saturated brines worldwide, but is notoriously difficult to maintain under laboratory conditions.