某日我们决定从生态学角度查验一下饮用水,于是把几公升水寄到英国做技术鉴定。一个月后寄来学术鉴定的结果: “禁止游泳。”于是寄去一些池塘里的水。三周后来自英国的答复如下: “汽油很好。” One day we decided to check the potable water from the ecological point of view, so a few liters of water sent to the United Kingdom for technical appraisal. One month later, the result of the scholarly appraisal was: “No swimming.” Some of the water in the pond was then sent. Three weeks later, the reply from the United Kingdom reads as follows: “Gas is very good.”