sugar water

• In the current study , the researchers taught individual cockroaches to associate peppermint ? a scent they normally find slightly distasteful ? with sugar water , causing them to favour it over vanilla , a scent they like very much
  在最近的研究中，研究者教导个体蟑螂与薄荷联系，薄荷是一种?们通常认为有点不好闻的气味，伴随著糖水，会使蟑螂喜欢这种气味更甚于香草(一种?们非常喜爱的气味) 。