Conspicuously absent from that list are houseflies.

很明显，家蝇并不在单上。

They are not the same as the housefly.

丽蝇和家蝇是不一样的。

Once a drop reaches five-to-six millimeters — that's about the size of a housefly — it'll go from bun shaped, to parachute shaped.

一旦雨滴达到 5 到 6 毫米 —— 大约是一只家蝇的大小 —— 它会从变成降落伞的状。

So she and colleagues did an experiment in which participants had to say how big a spider in a photo was on a scale from housefly to goat.

因此她和同事们进行了一项实验，参与其中的试验者们必须说出照片中从家蝇到山羊相大小的蜘蛛到底有多大。