BBC Learning English - Swans 天鹅

　　BBC Learning English – 5 Minute Programmes 5分钟节目

　　Swans 天鹅

　　Chen Li: 大家好，欢迎收听 BBC Learning English. 我是 Chen Li.

　　Helen: Hello, I’m Helen.

　　Chen Li: 说起天鹅 swans, 大家肯定会联想到高贵这个词。

　　Helen: Elegance

　　Chen Li: 还有优雅

　　Helen: Grace

　　Chen Li: 在英国很多的公园和河流都能看到天鹅。

　　Helen: And in recent years, we’ve seen a big increase in the numbers of swans across the country.

　　Chen Li: 但是令人难以想象的是，这么美丽的鸟现在竟然威胁了生态环境，被视为害虫一类。

　　Helen: So some people feel that swans are becoming a danger to other river life.

　　Chen Li: 那为什么天鹅造成了这么大的威胁呢？

　　Helen: To answer this question, here is Paul from the Salmon and Trout Association.

　　Chen Li: Paul 是三文鱼和鳟鱼协会的发言人，他提到问题之一是天鹅对水草的危害，影响了整个河域的生态平衡。

　　Insert

　　What happens is the swans come along and in deep water, they just graze on it, that’s no problem. It’s quite resilient and it’ll come back. The problem is in low water, they’ll eat it right down to the roots and they’ll kill it off.

　　Helen: So if the water level is deep enough, swans will just graze on the water plant.

060s.com