What these bees do is, they sit there. These solitary bees, they drill a hole in the ground or drill a hole in a branch, and they collect pollen and make it into a ball, and they lay an egg on it.
这些蜂的做法就是守株待兔。这些独居蜂， 它们在地面或者树枝上打好洞， 收集来花粉做成花粉球， 然后在花粉球上产一枚卵。