我不可以只用什么东西在我的院子周围画线来隔绝它们吗？
Couldn't I just line the perimeter of my yard with something to keep them at bay?
在陈述之后，在墙上地图周围展示所有的信息表。在地图上画线把信息表和国家连接起来。
After the presentation, display all the information sheets on the wall around the map. Draw Iines to join the sheets with the countries on the map.
在陈述之后，在墙上地图周围展示所有的信息表。在地图上画线把信息表和国家连接起来。
After the presentation, display all the information sheets on the wall around the map. Draw Iines to join the sheets with the countries on the map.
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