phenomenon

/fəˈnɑməˌnɑn/

any state or process known through the senses rather than by intuition or reasoning

中文释义：现象

The northern lights are a natural phenomenon that attracts many tourists.

北极光是一种吸引众多游客的自然现象。

Global warming is a phenomenon that has been widely studied by scientists.

全球变暖是科学家广泛研究的一种现象。