So the ball leaves a little thermal shadow, and the beetle climbs on top of the ball and wipes its face, and all the time it's trying to cool itself down, we think, and avoid the hot sand that it's walking across.
E a bola deixa uma pequena sombra térmica e o besouro sobe no topo da bola e limpa a face, e o tempo todo está tentando refrescar-se, achamos, e evitar a areia quente na qual está caminhando.