The flagella of microorganisms have provided inspiration for many synthetic devices, but they’re typically not easy to produce. A new class of swimmer makes it look simple by spontaneously growing a tail that it can whip to self-propel.

中文翻译：

---

有尾巴，会旅行

微生物鞭毛为许多合成装置提供了灵感，但它们通常不容易生产。一类新的游泳运动员通过自发地长出一条尾巴，它可以鞭打以自行推进，从而使它看起来很简单。