题目选项分析

By using a process called echolocation to analyze the echoes of the high-pitched sounds they produce, batscan determine not only the distance to an object but also its shape and size and the direction in which it is moving.

By using a process called echolocation to analyze the echoes of the high-pitched sounds they produce, batscan determine not only their distance from an object, but they can also determine its shape and size and the direction in which it is moving.