Last few years of his life, although spent in gradually degrading material and health conditions, were the most productive period of his life.

In the meantime, they are gradually degrading due to lack of supervision.

And it should be reapplied every two hours, because sun gradually degrades the chemicals.

It then gradually degrades certain game features over a time, eventually rendering it unplayable.

It has two weak points: it depends on only one clock, and the signals gradually degrade.

Another alternative is to do nothing, allowing the tritium to degrade gradually and be diluted by uncontaminated water.

After all, unlike the information stored in a computer, human memories gradually degrade and change over time.

But analog video images tend to degrade gradually.

There is a growing interest in using materials which gradually degrade.

Its performance, without electronic update, must gradually degrade.