Like bats, they use echolocation to navigate.

和蝙蝠一样，它们也利用回声定位来导航。

OCT is a form of optical echolocation.

OCT的原理是光学回声定位。

Think of it like echolocation with a melody.

把它想象成带有旋律的回声定位。

" … and then the echolocation calls in between, and then trills again."

“然后回声出现在两者之间，然后再次发出颤音。”

Well, bats do hunt in the dark using echolocation.

好吧，蝙蝠确实是使用回声定位在黑暗中狩猎。

At this point, the zombies rely on echolocation after losing their sight.

在这一阶段，僵尸失去视力后依靠回声定位。

But bats already invest most of their vocal resources in echolocation for hunting.

但蝙蝠已将大部分声音资源投入捕猎回声定位中。

Both have evolved to use echolocation to spot environments even in total darkness.

两者都进化到即使在完全黑暗的环境中也能使用回声定位来看清环境。

Its echolocation beam is locked onto its prey, but the moth is also emitting ultrasound.

它的回声定位声波已经锁定了它的猎物，但蛾子也在发射超声波。

The acoustic energy from the echolocation is thus absorbed.

这样，回声定位产生的声能就会被吸收。