这是八角形，薄，顶部是一个雕刻设计的两蛇。
It was octagonal-shaped, thin, and the top was a carved design of two snakes.
顶部装着蛇腹式铁丝网的高高的石墙，被渐渐隐现的哨塔隔开。
High stone walls topped with snaky concertina wire, set off at intervals by looming guard towers.
其原因是：像蛇和鳄鱼等变温动物排列在食物来源如昆虫的顶部，将会产生重大的影响。
The reason: ectotherms range from food sources like insects to top predators like snakes and crocodiles, the loss of which would have "major flow-on effects, " Shine says.
其原因是：像蛇和鳄鱼等变温动物排列在食物来源如昆虫的顶部，将会产生重大的影响。
The reason: ectotherms range from food sources like insects to top predators like snakes and crocodiles, the loss of which would have "major flow-on effects, " Shine says.
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