a periodic cooling of ocean surface temperatures in the central and east-central equatorial Pacific that causes global weather changes; the opposite of 厄尔尼诺 è'ěr​ní​nuò

an observable fact or event; the outward manifestation of things, as opposed to their essence or substance; (epistemology) the appearance of an object to the mind through the senses, as distinct from the thing-in-itself (noumenon)