蛇在医生那里–第2级
24-05-2023 15:00
一条23英尺（7米）长的蟒蛇进行了年度体检。这条蛇是欧洲最大的蛇。它的重量约为60公斤。
动物园的十个人把它抬到兽医那里，他们用超声波检查它的心脏。医生们可以通过这种方式了解到很多关于心脏健康的情况。
专家们在长颈鹿和鲨鱼身上尝试了类似的测试，但蛇的心脏更让他们感兴趣。蛇的心脏有三个腔，而不是像人类的心脏那样有四个腔。
你可以在第三级栏目中观看原始视频。
与人类的心脏相比，蛇的三室心脏有什么独特之处？
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Reading
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