<prompt> Translate the following text to SwahiliHowever, there are still major gaps in the science of mercury fate, transport, and transformation that make such an assessment difficult at time.  <response>: Hata hivyo, bado kuna mapungufu makubwa katika sayansi ya bahati ya zebaki, usafirishaji, na mabadiliko ambayo hufanya tathmini kama hiyo kuwa ngumu kwa wakati. 