phenomenon|phenomena

路怒症的兴起是一个相对较新的现象。

The rise of road rage is a relatively recent ___phenomenon.

科学家们正在研究各种自然现象，比如风暴和闪电。

Scientists are studying various natural ___phenomena like storms and lightning.

在一些沿海城镇，“醉酒旅游”作为一种意想不到的现象出现了。

In some coastal towns, 'drunkenness tourism' has emerged as an unexpected ___phenomenon.

极光是一种令人惊叹的自然现象，科学家们一直在研究它。

The aurora is one of the most fascinating natural ___phenomena studied by scientists.

极光是大自然最令人惊叹的奇观之一。

The northern lights are one of nature's most amazing ___phenomena.