The giant bill of the chestnut-mandibled toucan makes up a third of the bird's bodylength, but thanks to a honeycomb structure, it's not as heavy as it looks.
栗嘴巨嘴鸟很大的喙占据了它身体的三分之一长度，但由于其为蜂巢式结构，它并没有看起来那么重。
2
The brown long-eared bat has enormous ears that stretch three-fourths the lengthof its entire body.
这种褐色的长耳蝙蝠有两只大大的耳朵，大概有它整个身体的四分之三长。
3
As many as four-fifths of all the cells in the electric eel's body are specialized for generating electricity, and the strength of the shock it can deliver corresponds roughly to lengthof its body.