未来，纳米机器人可能会被用于修复人体受损的细胞。

In the future, ___nanobots may be used to repair damaged cells in the human body.

科学家们正在研究纳米机器人如何在人体内执行精确的医疗任务。

Scientists are studying how ___nanobots could perform precise medical tasks inside the human body.

科学家正在研发能在血管中精准输送药物的纳米机器人。

Scientists are developing ___nanobots that can deliver drugs precisely inside blood vessels.