舌头的“味觉地图”是真的吗？

You may have seen a taste map. 你也许见过一张“味觉地图”。 It says the tip tastes only sweet. 它说舌尖，只管尝甜味。 The sides supposedly taste sour and salty. 说舌头两边，专门尝酸和咸。 The back, it claims, catches only bitter. 还说舌根，就只会尝苦。 But this famous map is a myth. 可这张有名的地图，其实是个谣言。 Every part of your tongue tastes all four. 舌头哪儿都能尝出酸甜苦咸。 The map has fooled people for years. 这地图，骗了大家好多年。