<prompt> Translate the following text to SwahiliCharacteristics related to useful life are that has an indeterminate or an unpredictable useful life because of the unusual manner in which it is used, improved, retired, modified, or maintained or is at a very high risk of being destroyed during use or of premature obsolescence.  <response>: Hii inamaanisha kuwa kiwango cha maisha ya matumizi ni kitu ambacho kina maisha ya matumizi yasiyo ya kawaida au yasiyoweza kutabiriwa kwa sababu ya njia isiyo ya kawaida ambayo hutumiwa, kuboreshwa, kustaafu, kubadilishwa au kudumishwa, au kuna hatari kubwa sana ya kuharibiwa wakati wa matumizi au ya kukosa matumizi mapema. 