！phenomenon是可数名词，它的复数是phenomena，n. 现象（phenomenon的复数）
造成这种现象的原因尚未彻底弄清。The causes of the phenomenon are still incompletely understood.
他宣称他完全不相信通灵现象。
He declared his total disbelief in psychic phenomena.
！phenomenon是可数名词，它的复数是phenomena，n. 现象（phenomenon的复数）
造成这种现象的原因尚未彻底弄清。The causes of the phenomenon are still incompletely understood.
他宣称他完全不相信通灵现象。
He declared his total disbelief in psychic phenomena.
