It takes much longer for the snail to associate this tickling with the arrival of food 蜗牛经过很长时间后，才把这种撩痒和食物联系在一起。
2.
This shows that the snail now has a memory associating the smell of pear drops with the arrival of food - a learned and remembered response 这表明，蜗牛现在已经有了把梨汁的气味和食物联系在一起的记忆，也就是学习和记忆的反应。
