We have had warm periods and little ice ages; but the changes have been small.
我们有过暖期和小冰期；但是变化很小。
At a news conference, Mathis said that in addition to the extreme warm periods, the overall year was the warmest on record.
马西斯在新闻发布会上说，除了出现几段极端温暖时期，今年还是有记录以来最热的一年。
Warm periods were marked by gray layers in the ocean sediments caused by the calcium-containing microorganisms dissolving into acidic oceans.
暖期海洋沉积层样品因含钙微生物在酸性海洋中溶解而呈灰色。
Earth was already in one of its warm interglacial periods when we started burning fossil fuels.
当我们开始使用化石燃料时，地球已经处于温暖的间冰期之一。
High carbon dioxide levels are associated with warm interglacial periods, and low levels with cold glacial periods.
高二氧化碳含量与温暖的间冰期有关，低二氧化碳含量与寒冷的冰期有关。
Recent studies do in fact show that high carbon dioxide levels are associated with warm interglacial periods, and low levels with cold glacial periods.
最近的研究确实表明，高二氧化碳水平与温暖的间冰期有关，而低二氧化碳水平与寒冷的冰期有关。
In contrast, the Central Kingdom's periods of stability and prosperity occurred during sustained warm spells, the researchers said.
研究者还说，与此相反的是中原稳定繁荣时期气候刚好都处于温暖期。
Laptop computers naturally run hot (or at least very warm), and if they stay hot for prolonged periods of time they may overheat and cause serious damage.
笔记本电脑通常会发烫(或者只是发热)，如果持续发烫的时间太长，就有可能因过热而导致严重的损毁。
Then around 120, 000 years ago, the Earth started to warm during a periods known as the Eemian period and this brought life and abundance to Africa.
接着，到约十二万年前，伊米亚冰期（Eemian period），地球开始变暖，给非洲带来了生机和繁荣。
It is revealed that droughts often occur in the cold periods while floods in the warm, indicating the monsoon climate change.
结果显示本区气候总体冷期易旱、暖期易涝，显示季风气候区的特征。
Wet and warm summers occurred during periods of Roman and Medieval prosperity.
在夏季温暖潮湿的时期正是罗马和中世纪的繁荣时期。
The results showed that the climate changing patterns had gone through several complex cycles of "warm and dry" and "cold and moist" periods.
结果表明，全新世以来，中国西部干旱区的气候变化经历了多次的相对暖干和相对冷湿交替变化，变化历程较为复杂。
When using your phone for prolonged periods of time, such as when you're talking to the phone, charging the battery, browsing the web or using navigating software, the device may become warm.
当使用导航软件的手机长时间使用时间，如当你说话到手机上，充电电池，浏览网页，或者该设备可能会变得温暖。
When using your phone for prolonged periods of time, such as when you're talking to the phone, charging the battery, browsing the web or using navigating software, the device may become warm.
当使用导航软件的手机长时间使用时间，如当你说话到手机上，充电电池，浏览网页，或者该设备可能会变得温暖。
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