第2836期:What insects can teach surgeons - 英语每日一听

Sawflies are named after the saw-like organ used by the females to lay eggs in plants. The insects want to avoid killing the plants, which provide food for their larvae.锯蜂以它身上一种像锯子一样的器官命名，雌性锯蜂会用这个锯状器官在植物内部产卵。这种昆虫会尽量避免杀死植物，因为植物可以为它们的幼虫提供食物。 The researchers discovered that small serrations on the sawfly's teeth worked with larger protrusions to create a selective cutting action, allowing them to avoid cutting internal structures carrying water and nutrients. The team scaled up the mechanism and tested it on material mimicking human tissue.研究人员发现，锯蜂牙齿上较小的锯齿状突起和较大的突起物共同作用，从而创造出了一种具有选择性的切割动作，这种动作让...