memory wear in a sentence

• Flash memory wears out over time as it is repeatedly written to; the writes required by defragmentation wear the drive for no speed advantage.
• This is the root cause of flash wear-out ( see Flash memory # Memory wear ), which is specified as the chip s  endurance .  In order to reduce the occurrence of such short circuits, floating gate flash is manufactured using a thick tunnel oxide ( ~ 100?), but this slows erase when Fowler-Nordheim tunneling is used and forces the design to use a higher tunneling voltage, which puts new burdens on other parts of the chip.
• It's difficult to see memory wear in a sentence .