Right. The whole cycle is actually called ENSO–the El Nino-Southern Oscillation.

没错。其完整周期被称为厄尔尼诺-南方涛动。

For instance, a cyclical phenomenon in the Pacific Ocean known as the El Nino-Southern Oscillation causes year-to-year fluctuations by shifting heat in and out of deeper ocean layers.

例如，太平洋上一种被称为厄尔尼诺-南方涛动的周期性现象，通过将热量从深层海水中传入和传出而导致年复一年的波动。

El Nino has arrived Operating on top of this background of ocean warming is a natural climate cycle called the El Nino-Southern Oscillation, or ENSO.

厄尔尼诺现象已经到来 在海洋变暖的背景下运作的是一种自然气候循环，称为厄尔尼诺-南方涛动（ENSO）。