The slow-worm is in fact not a snake but a legless lizard.蛇蜥其实不是蛇，而是无脚的蜥蜴。The lizard darted out its tongue at the insect.蜥蜴伸出舌头去吃小昆虫.In the lizard, a muscular septum partially divides the ventricle.在虫蜴中, 肌肉质的隔膜把心室部分地隔开.T...
The slow-worm is in fact not a snake but a legless lizard.蛇蜥其实不是蛇，而是无脚的蜥蜴。The lizard darted out its tongue at the insect.蜥蜴伸出舌头去吃小昆虫.But, of the vertebrates, unpredictable Nature selected only snakes ( and one lizard ).但...