a large, powerful light at the front of a vehicle, usually one of two

You could see the beams of the car headlamps. 你可以看到汽车前灯发出的光束。

I had to change a headlamp bulb on my car. 我得给车的前灯换个灯泡。

a light worn on the head, for example when going under the ground

Men wearing headlamps worked in tunnels as dark as tombs. 人们戴着头灯在黑得像坟墓一样的地道里工作。

The divers wore waterproof suits, helmets and headlamps. 潜水员穿着防水服，戴着头盔和头灯。