Beefly: any of various flies of the family bombyliidae that resemble bees feed on nectar and pollen and have larvae that are parasitic on bees wasps and other insects.
蜂虻：蜂虻科中各种外表象蜂的蝇，它们以花粉和花蜜为食，其卵产于并寄生于蜜蜂、黄蜂和其它昆虫。
2
Beefly: any of various flies of the family bombyliidae that resemble bees feed on nectar and pollen and have larvae that are parasitic on bees wasps and other insects.
蜂虻：蜂虻科中各种外表象蜂的蝇，它们以花粉和花蜜为食，其卵产于并寄生于蜜蜂，黄蜂和其它昆虫。
3
By offering fly-through hospitality, the trees win the prize of a brush with a pollen-covered bee and the chance of cross-pollination with another tree.