<prompt> Translate the following text to SwahiliFor large-scale simulations, one-way nesting of fine and coarse grids can be performed to allow simulation of sensitive areas with strong pollution spatial gradients using a fine grid resolution.  <response>: Kwa simulations kubwa-scale, moja-njia nesting ya grids fine na coarse inaweza kufanyika kuruhusu simulation ya maeneo nyeti na nguvu uchafuzi gradients nafasi kwa kutumia gridi fine azimio. 