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河狸为什么建水坝？
665,807 plays
|
Glynnis Hood
|
TED-Ed
• January 2023
Read transcript
在加拿大北部偏僻的丛林深处坐落着世界上最长的河狸水坝。它 850 米长，在卫星图像里也清晰可见。它极大地改变了该地区的面貌，创造出一片蓄水量约为七千万升的池塘。不论大小，水坝对环境均有巨大影响。那么河狸是如何建成这些伟大建筑的？格林尼斯·胡德带您详细了解。 主讲人：格林尼斯·胡德 导演：基根·桑希尔
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