But this superior performance cannot be maintained indefinitely.
Moreover, if it were maintained indefinitely, it could have harmful side effects.
Plus, once some of these remedies are in place, they must be maintained indefinitely.
If a particular site asks for detailed research about a topic, comScore says "selected anonymous records relating to that specific site may be maintained indefinitely".
The leading one, for women, is estrogen replacement after menopause, which may have to be maintained indefinitely to prevent rapid bone loss.
Such storage appears robust (dry casks at Fukushima, hit by the tsunami, show no sign of having leaked) and can be maintained indefinitely.
A plasma in stable equilibrium can be maintained indefinitely if the leakage of energy from the plasma is balanced by energy input.
Moreover, parasitic diseases can be maintained indefinitely in human populations that are without access to medical relief to break the parasite infection cycle.
Such a yield is one that can in principle be maintained indefinitely because it can be supported by the regenerative capacities of the underlying natural system.
Even if the current Social Security system is maintained indefinitely, the dwindling of traditional, defined-benefit pension plans means that few workers can count on a financially secure retirement without putting aside money of their own.
That was slightly higher than the five tons per acre that the department estimated was a tolerable annual rate of erosion for most Iowa soils, meaning that it allowed a high level of crop productivity to be maintained indefinitely.
