蝴蝶用脚，怎么尝味道？

Butterflies do not taste with their mouths. 蝴蝶，不用嘴巴尝味道。 Their taste sensors are on their feet. 它们的味觉，长在脚上。 When they land on a flower, they step on it. 落到花上，它们先用脚踩一踩。 That is how they know if the nectar is good. 一踩，就知道这花的蜜好不好。 If it tastes right, they unroll their long tongue. 味道对了，它们才伸出长嘴。 Their feet are like tiny tasting spoons. 它们的脚，就是一把把小勺子。