The 1930s saw widespread domestic usage of electric light including early incarnations of the headlamp.

30年代电灯在美国得到广泛使用，其中包括最早期的头灯。

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Whether you prefer a headlamp, a chest lamp, or a handheld flashlight, bring something along to light your way.

头灯也好，胸灯也好，手持式电筒也好，无论哪样，请至少保证有帮你照亮道路的工具。

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Remove light bulb from headlamp unit.

从大灯单元上拆下灯泡。

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The summit day begins in headlamp light at 1 am, when a line of trekkers kicks crampon spikes into the crunchy snow and trudge slowly to the peak, hoping to summit at dawn.

BBC: How to climb a South American volcano