Interactions between two bodies that are both attractive and repulsive — such as predators chasing prey — are common in nature. Similar chasing behaviour has now been engineered in self-propelling microdroplets and controlled through fundamental physical and chemical mechanisms.

中文翻译：

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油滴切入正题

两个既有吸引力又令人厌恶的身体之间的相互作用——例如捕食者追逐猎物——在自然界中很常见。类似的追逐行为现在已经在自推进微滴中进行了设计，并通过基本的物理和化学机制进行控制。