【英语时差8,16】蛇的第六感：犁鼻系统 -下

（单词翻译）

Although snakes often have very sharp vision, a sense of smell, and a sensitivity to heat, their most important sensory¹ system is one that we humans don’t share with them at all. This sixth sense is called the "vomeronasal system," and the sense organs for this are two tiny, bulb-shaped structures located on the roof of the snake’s mouth. This sensory system is somewhat similar to smell-in that it senses the presence of chemicals in the snake’s environment. Snakes can use this extra sense to detect the faint chemical traces left by departing prey², or they can use it to track down a mate.