<prompt> Translate the following text to SwahiliWhile this would bias estimates based on more recent pollution levels upwards, it also would imply a truly long-term chronic effect of pollution.  <response>: Ingawa hii ingekuwa bias makadirio kulingana na viwango vya uchafuzi wa hivi karibuni juu, pia ingekuwa maana ya kweli muda mrefu athari ya muda mrefu ya uchafuzi. 