Such surfaces reflect most of the bats' echolocation energy away from it, but some energy hits the surface perpendicularly, sending an echo back directly beneath the bat.
这样的平面反射了大部分蝙蝠的声波，但是有一部分能量垂直撞击到表面上，声波回传至蝙蝠。
We are convinced that cooperation, exchange of knowledge and mutual respect are the best means to echo back the message of nature reflected in the wonderful gift of these plants.
我们相信，合作、知识的交流和互相尊重可以最有效地回应自然使用这些美妙的植物传递给我们的讯息。
The sound waves from these cries bounce off objects and echo back to the bat's ears.
从这些叫声中传出的声波，被物体弹回，回声传到蝙蝠的耳里。
The sound waves from these cries bounce off objects and echo back to the bat's ears.
从这些叫声中传出的声波，被物体弹回，回声传到蝙蝠的耳里。
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