Other scientists point to global climate change, citing evidence for a period of sudden warming and cooling.
另外还有科学家认为是全球气候变化，他们举了一些气候突然变暖或变冷的例子。
A sudden Epiphany would not save us from drastic climate change, large scale human migrations, rising sea levels, famine and endemic food shortages.
就算救世主突然现身，也无法拯救我们于猛烈的气候变化和人类的大规模的迁移，还有海平面上升，以及饥荒和地区性的食物短缺等等。
Most scientists do not feel that Mars 'climate change was necessarily caused by a violent and sudden event.
多数科学家认为，火星上的气候变化并不一定是由猛烈而有突发的事件造成的。
The sudden, seasonal appearance of thousands of the creatures occurs in waters warmed by climate change and in areas where overfishing has removed the food competition forinvasivejellies.
成千上万的水母往往季节性地突然出现在由于气候变化而变暖的水域，或者出现在由于过度捕捞使入侵的水母失去食物竞争对手的海域。
The minimal growth rate is often indicative of cold climate and even depositional break and sudden change of climate and geology and hazardous events.
沉积速率极小，往往是冷气候显示，甚至是沉积间断，或是气候和地质、灾害事件的突变点。
The raised fields of the Tiwanalcu may be a good example of a complex society already responding to the challenges of a marginal environment, and therefore vulnerable to sudden climate change.
提瓦那库的高地农业可以做为一个绝好的例子来说明一个复杂的社会对于边缘环境的挑战已作出反应，但也因此易于受到气候突变的伤害。
The raised fields of the Tiwanalcu may be a good example of a complex society already responding to the challenges of a marginal environment, and therefore vulnerable to sudden climate change.
提瓦那库的高地农业可以做为一个绝好的例子来说明一个复杂的社会对于边缘环境的挑战已作出反应，但也因此易于受到气候突变的伤害。
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