Earthworms break down substances in the soil, and with Taiwan's problems of heavy metals pollution, the only current hopes for rescuing condemned farmland rest on earthworms.
蚯蚓是土壤的分解者，台灣遭重金屬汙染，等於被宣判死刑的農地，目前唯一可能解決問題的希望，就寄託在這「治地小英雄」身上。