一只蝙蝠在夜空中俯冲而过。

A ___bat swooped through the night air.

一只蝙蝠突然飞近我的耳朵。

A ___bat suddenly flew close to my ear.

我看到一只蝙蝠倒挂在洞穴里。

I saw a ___bat hanging upside down in the cave.