And he's been studying a type of fly known as a " hoverfly."

他一直在研究被称为“食蚜蝇”的一种苍蝇。

He's been studying a type of fly known as a " hoverfly." You may have actually seen them before, masquerading as bees and wasps.

他一直在研究一种被称为“悬浮蝇”的苍蝇。你以前可能真的见过它们，它们伪装成蜜蜂和黄蜂。