闪电是一种引人注目的自然现象。

Lightning is a striking natural ___phenomenon.

路怒症似乎是一个相当新的现象。

Road rage seems to be a fairly recent ___phenomenon.

醉酒旅游是地中海城镇中一个意想不到的现象。

Drunkenness tourism is an unexpected ___phenomenon in Mediterranean towns.