It's a good thing I brought this flare gun.

幸好我带了信号枪。

I have two weeks worth of food, water purifiers, a flare gun.

我准备了够吃两周的食物、净水器，还有信号枪。

I'm not gonna shoot off a flare gun in the house.

我又不会在屋里开信号枪。

Like, it was obviously a flare gun.

那个很明显是信号枪。

Loaded flare gun on a jar full of gasoline.

将信号枪装在装满汽油的罐子上。

They had no flare gun or any other way to signal for help other than by waving so they knew that their chances of survival were going to be slim.

他们知道，他们没有信号枪，也没有任何其他方式来发出求救信号，只能靠挥手，所以他们知道，自己的生存机会将会很渺茫。