大雨之后,我家门前的花坛里爬出很多蜗牛。对,蜗牛喜欢潮湿。可我却没有发现蜗牛有脚,它怎么爬行的呢?如果仔细观察,会看到在蜗牛腹部生有一道宽而细的横褶,这就是它的脚。蜗牛用横褶紧贴在别的物体上,腹部肌肉做波状蠕动,就能向前爬行了。同时,它足上的足腺还能分泌一种粘液帮 After the heavy rain, many snails climbed out of the flower bed in front of me. Yes, snails like damp But I did not find snails feet, how to crawl it? If you look closely, you will see in the snail belly birth with a wide and thin horizontal pleats, and this is its feet. Snail with a horizontal folds close to other objects, abdomen muscles do wavy creep, you can crawl forward. At the same time, it is enough on the foot of the gland can secrete a mucus help