Sentence examples for still difficult to achieve from inspiring English sources

However, accurate spatiotemporal control of transgene expression is still difficult to achieve.

Even with domestic violence, the laws may be in place but actual access to justice is still difficult to achieve.

It is best to set a target that you can very likely achieve, but is still difficult to achieve.

However, despite advances in AON chemistry and design, systemic use of AONs is limited due to poor tissue uptake and sufficient therapeutic efficacy is still difficult to achieve.

Despite recent advancements in the field of plasmonics, it is still difficult to achieve plasmonic enhancement of the overall efficiency of photochemical reactions.

However, bioadhesion of targeted microbubbles under physiological flow conditions is still difficult to achieve, the main challenge being connected to the poor stability of lipid microbubbles in the body's circulation system.

Skin constructs containing multiple functional structures such as sweat glands, hair follicles, sebaceous glands are still a difficult to achieve yet very important requirement.

But justice is difficult to define and still more difficult to achieve.

The main problem with this method is that it is still very difficult to achieve with our current technology.

While mutagenesis and other bioengineering approaches improve the specificity of biological nanopores like αHL, it still remains difficult to achieve high chemical specificity.

Vaccines are only available for a few diseases, and even when they are available, as for yellow fever, prevention can still be difficult to achieve.