Warmer sea temperatures caused by climate change and periodic El Nio events have caused large areas of coral to be wiped out in so-called "bleaching" events.
气候变化及周期性的厄尔尼诺现象引起的海水变暖，已经造成了大面积的珊瑚礁在所谓的“漂白”事件中消失殆尽。
Warmer sea temperatures caused by climate change and periodic El Niño events have caused large areas of coral to be wiped out in so-called "bleaching" events.
由于气候变化及周期性的厄尔尼诺现象而引起的海水变暖已经造成了大面积的珊瑚礁消失殆尽——即所谓的“漂白”现象。
Some of the reasons are natural; California has been in one of its periodic droughts since 2006, and climate change is a long-term threat to the state's mountain snowpacks.
其中有自然原因：2006年以来，加州一直处于一个周期性干旱中，而气候变化是对州内山区积雪的长期威胁。
Climate rainfall is not only one of main sources of water resources, but also one of major factors affecting periodic change of water resources over this region.
气候降水是该区水资源的主要来源之一，也是影响该区水资源周期性变化的主要因素之一。
Climate rainfall is not only one of main sources of water resources, but also one of major factors affecting periodic change of water resources over this region.
气候降水是该区水资源的主要来源之一，也是影响该区水资源周期性变化的主要因素之一。
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