This freaky phenomenon is ball lightning.
这种奇异的现象被称作球形闪电。
One strange form of lightning is called ball lightning.
球状闪电是一种奇怪的闪电类型。
This highlights a problem faced by people proposing theories of ball lightning .
这使得球状闪电理论的提出者所面临的一个问题凸显出来。
Ball lightning seems an obvious explanation, says Dr Hughes.
休斯博士说，球状闪电似乎是个明显的解释。
Ball lightning seems an obvious explanation, says Dr Hughes.
休斯博士说，球状闪电似乎是个明显的解释。
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