For many low-lying Pacific Island nations, warming over 1.5 degrees is a threat to their survival.

对许多地势低的太平洋岛国的居民而言，全球变暖超过 1.5 度将威胁到他们的生存。

But what worries us most is this: we are starting to see an acceleration of warming over the past 50 years.

但最让我们担心的是：过去50年来，我们开始看到气候变暖加速。

And so we interpret that as meaning that the summertime temperatures in this area have gradually been warming over the past couple decades.

因此我们将其解释为该地区的夏季气温在过去几十年中逐渐变暖。

The most obvious reason is that, despite a marked warming over the course of the 20th century, temperatures have not really risen over the past ten years.

最明显的一句就是，尽管20世纪以来气候明显变暖，但是在过去十年气温一直没有涨.

These facts matter because the oceans cover seven-tenths of the Earth's surface and are its primary heat sink (90% of the extra warming over the past 40 years has gone into the oceans).

这些事实十分重要，因为海洋面积占地球表面7/10，是地球主要的散热器(过去40年里，90%的多余热量被海洋吸收).