fusee

The truck driver lit a fusee and placed it on the shoulder of the highway to warn other drivers.

卡车司机点燃一支警示火炬，把它放在高速公路路肩上，以警告其他司机。

When the train stopped unexpectedly, the conductor used a fusee to signal the following train to slow down.

火车意外停下时，列车员用一支信号火炬示意后面的火车减速。

Hikers often carry a fusee in their emergency kit so they can signal for help at night.

徒步者常在应急包里带一支信号火炬，以便夜间发出求救信号。