Pilotless drones can help fill the gap.

无人机能有助于填补该空缺。

youdao

And so, in due course, the alien craft arrive: tetchy pilotless drones in the shape of pizzas, from which individual slices peel off to launch spicy, deep-crust attacks on defenseless mortals.

NEWYORKER: Out There

But what about pilotless drones?

ECONOMIST: A small Welsh airport has become an unlikely tech cluster