I could see the beam of his flashlight waving around in the dark.

我可以看到他的手电光暗中上下舞动。

The man searched the whole house with a flashlight inside out.

那人拿着电把整个屋子里里外外搜查了一遍。

I saw the sudden flare of a flashlight in the darkness.

我看到手电暗中突然闪出的亮光。

S-your flashlight over here.

把你的手电往这里照。