Now listen to part of lecture on the topic you just read about.现在来听一段关于你刚刚所读到的话题的演讲 。The cane toad won't be as easy to get rid of as the reading suggests.海蟾蜍不像阅读中说的那样容易摆脱。The measures proposed by the reading are likely either to be unsuccessful or to cause unwanted environmental damage.阅读中所提出的方法 可能不是不成功就是会带来不必要的环境损害。First of all, a national fence probably won't stop the spread of the toad. That's because young toads and toad eggs are found in rivers and streams.首先，一个国家性的围栏并不能阻挡海蟾蜍的传播。因为在河流和溪流里能找到幼蟾蜍和蟾蜍蛋。No matter where the fence is located, at some point there will be rivers or streams flowing from one side to the other.不论围栏放在哪里，在某
