These sizable sound-collectors help the jerboas sense low frequency noises, and keep cool by radiating heat.

这些体型巨大的声音收集器帮助长耳跳鼠感知低频噪音，并通过散热保持凉爽。

Other animals are almost all ears, like the aptly named long-eared jerboa, which is the animal kingdom's largest ears in proportion to body length.

还有一些动物几乎全是耳朵，比如长耳跳鼠，它是动物王国中耳朵与体长比例最大的动物。