U.S. Forest Service ecologist Susannah B. Lerman.

美国林务局的生态学家苏珊娜·B·勒曼说到。

Lerman thinks that's because most of the bees she found were tiny native sweat bees, roughly the size of a grain of rice.

勒曼认为，这是因为她发现的大部分蜜蜂是体型较小的本土汗蜂，这种蜜蜂的大小和一粒米差不多。