They all had the same screw-and-nut mechanism.
结果发现：它们腿和身体连接的机制都像螺丝拧进螺母一样。
The beetles are the first animals found to have a screw-and-nut mechanism in their bodies.
人们也是第一次在这种甲虫身上看到动物有螺丝——螺母式的身体构造。
It looks like the beetles are using the screw-and-nut mechanism in the opposite way to humans, says Chris Lyal of the Natural History Museum in London.
甲虫组装身体时使用螺丝——螺母原理的方式和人类正好相反。
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