Chinese researchers have found that greenhouse warming and internal variability have increased the frequency of extreme El Nino and Central Pacific El Nino events since 1980.

中国研究人员发现，自 1980 年以来，温室效应和内部变异性增加了极端厄尔尼诺和中太平洋厄尔尼诺事件的频率。

The concentrations of methane cause this greenhouse effect on the earth, and it is the second largest contributor to greenhouse warming.

甲烷的浓度对地球造成了这种温室效应，它是导致温室变暖的第二大因素。

Those materials are very bad to impact into, because when you vaporize and distribute the vapor from those particular rocks, you turn the carbonate-containing limestone into greenhouse warming CO2, carbon dioxide.

那些物质在撞击时非常危险，因为那些特殊石头会被汽化蒸发并且散播到全世界，这就把含碳的石灰石变成了温室气体，二氧化碳。

Methane is also a focus, with a new satellite due to launch in 2023 that will help monitor concentrations of the harmful emission, the second-largest contributor to greenhouse warming after carbon dioxide.

甲烷也是一个重点，一颗新卫星将于 2023 年发射，这将有助于监测有害排放物的浓度，这是仅次于二氧化碳的第二大温室气体排放源。

We saw the mention of methane emissions earlier in the article, and methane can be very harmful because if there's a lot of concentration in the earth, that contributes to greenhouse warming, making the earth warmer.

我们在文章前面提到了甲烷排放，甲烷可能非常有害， 因为如果地球上有很多浓度， 就会导致温室变暖， 使地球变暖。