To the right species of bee, this looks like another very aggressive bee, and it goes and bonks it on the head lots and lots of times to try and drive it away, and, of course, covers itself with pollen.
对于适合种类的蜜蜂来说， 这看起来像是另一只非常有侵略性的蜜蜂， 它会飞过来用头撞击它许多许多次，试着赶走它， 当然，这会让它沾上花粉。