This test traded bunnies for African clawed frogs.

这项试验用非洲爪蛙代替了兔子。

See, these invasive clawed frogs carry and transmit a nasty fungus known as BD that causes the deadly and untreatable disease chytridiomycosis.

看，这些入侵的爪蛙会携带并传播一种被称为 BD 的恼人真菌，这种真菌会导致致命的且无法治愈的壶菌病。