Steel's fragility at low temperatures first became a major concern during the Second World War.
第二次世界大战期间，钢在低温下的易碎性首次成为人们关注的主要问题。
Global temperatures began to rise slowly after 1850, with the beginning of the Modern Warm Period.
1850年后，随着现代暖期的开始，全球气温开始缓慢上升。
People might think that with such low temperatures for most of the year, the ice would be thick and hard.
人们可能会认为，在一年中的大部分时间里气温都这么低的情况下，冰层会又厚又硬。
It's possible that rain on the desert floor could turn to thin sheets of ice when temperatures drop at night.
当夜间气温下降时，沙漠地面上的雨水有可能变成薄冰。
The warmer temperatures mean that some of them can now grow peaches and maize where previously they could not.
气温升高意味着一些村民能种植桃子和玉米这些从前不能种植的作物了。
Some seeds may germinate in three days even if they have been exposed to very low temperatures for a long time.
即使长时间暴露在极低的温度下，有些种子也能在三天内发芽。
The reconstructed mammoth hemoglobin could deliver oxygen at colder temperatures than the human form of the protein could handle.
重组的猛犸象血红蛋白可以在比人类血红蛋白更低的温度下输送氧气。
These extreme shifts would have put a lot of stress on the bodies of animals that were used to a more moderate range of temperatures.
对于已经习惯较为温和的温度范围的动物来说，这些极端变化会给它们的身体带来很大压力。
Another important push was the onset of the Little Ice Age, a climatic phenomenon that led to cooler temperatures in the Northern Hemisphere.
另一个重要的推动因素是小冰期的开始，这一气候现象导致北半球气温下降。
With temperatures rising and more water vapor in the air, such storms can pull in more moisture and thus rain or snow more heavily than storms of old.
随着气温升高，空气中的水蒸气增多，这样的风暴会吸收更多的湿气，因此雨雪会比以前的风暴来得更猛烈。
Carbon dioxide is the second most important greenhouse gas, trapping heat in our atmosphere and increasing global temperatures via the greenhouse effect.
二氧化碳是第二大重要的温室气体，它阻止我们的大气散热，并通过温室效应增加全球温度。
Turns out the Cremonese violins were made from trees that grew during a Little Ice Age, a period when temperatures across Europe were significantly lower than normal.
事实是，克雷蒙小提琴由生长在小冰河时期的树木制成，当时整个欧洲的气温明显低于正常水平。
Prior to 1960, geologists Bowen and Hess disagreed over whether or not the very high temperatures needed to produce magmas rich in magnesium could have existed on Earth.
在1960年之前，地质学家鲍温和赫斯在地球上是否存在产生富含镁的岩浆所需的高温这一问题上存在分歧。
The earliest ceramics were fired to earthenware temperatures, but as early as the fifteenth century B.C., high-temperature stonewares were being made with glazed surfaces.
最早的陶瓷制品是在制陶的温度下烧制的，但是早在公元前15世纪，（人们）已经用高温烧制表面上釉的炻器。
Ian Smith, a Ph.D. student of Boston University in the United States, said, "Cities are in the important position in fighting against rising temperatures and increasing CO2."
美国波士顿大学的博士生伊恩·史密斯说：“城市在对抗气温上升和二氧化碳增加方面处于重要地位。”
Far from the sun, in the outer solar system, beyond Jupiter's orbit, temperatures are low enough to permit ices to form out of water and out of gases like methane and carbon dioxide.
在远离太阳的外太阳系，在木星轨道之外，温度低到足以使冰从水以及甲烷和二氧化碳等气体中形成。
Now, though, a novel type of steel has been developed that resists fractures at much lower temperatures, while retaining its strength and toughness—without the need for expensive additives.
然而现在，一种新型的钢已经被开发出来，它可以在更低的温度下抵抗断裂，同时保持其强度和韧性，而不需要昂贵的添加剂。
Chlorophyll, although exquisitely evolved to capture the energy of sunlight, can sometimes be overwhelmed by it, especially in situations of drought, low temperatures, or nutrient deficiency.
叶绿素虽然已经进化得极为精巧，能捕捉阳光中的能量，但有时也会应接不暇，特别是在干旱、低温或缺乏营养的情况下。
Both these devices worked well in sunny climates; but in northern Europe, the sun may be hidden by clouds for weeks at a time, while temperatures vary not only seasonally but from day to night.
这两种装置在阳光充足的气候条件下工作良好；但在北欧，太阳可能一次被云层遮挡数周，而温度不仅随着季节变化，而且还随着昼夜变化。
This is useful for irrigation, but the high temperatures, low humidities, and different day lengths of the dry season, compared to the normal growing season, can present difficulties with some crops.
这对于灌溉是有用的，但是旱季的高温、低湿度和不同于正常生长季节的白昼长度，会给一些作物的生长带来困难。
Paradoxically, while the temperatures required for liquid water exist only in the inner solar system, the key building blocks of life, including water itself, occur primarily beyond the asteroid belt.
矛盾的是，虽然液态水所需的温度只存在于太阳系内部，但生命的关键组成部分，包括水本身，却主要存在于小行星带之外。
Recently, researchers have used data collected by monitoring surface water temperatures to improve the ability of a reef to recover from bleaching.
最近，研究人员通过监测表面水温获得数据，并用此数据来提升珊瑚礁从漂白状态中恢复的能力。
Science tells us that we sleep better in cooler temperatures of about 60 to 67 degrees Fahrenheit (15℃ to 20℃).
科学告诉我们，我们在60到67华氏度（15到20℃）的凉爽温度下睡得更好。
The beginning of March brings some unusual weather, as temperatures rise and rainfall comes with thunderstorms.
三月初的天气不太寻常，温度攀升，降雨还伴随着雷暴。
The poorest countries are facing the worst influence of rising temperatures—for which they are least responsible.
最贫穷的国家正面临着气温上升所带来的最严重的影响，而他们对气温上升的责任却最小。
Scientists have long predicted that warmer temperatures caused by climate change will have the biggest influence on the world's poorest people.
科学家在很早之前就做出预测，受气候变化所导致的气温上升影响最大的群体将是世界上最贫困的人口。
Not many of our readers would choose to go for a swim in such low temperatures, but in some countries, ice swimming has been popular for centuries.
我们的读者中没有多少人会选择在如此低温下游泳，但在某些国家，冰泳已经流行了好几个世纪。
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。
There has been a dramatic rise in the number of extreme weather events over the past 20 years, caused largely by rising global temperatures, according to a new report from the United Nations.
根据联合国的一份新报告，在过去20年里，极端天气事件的数量急剧增加，这主要是由全球气温上升引起的。
There has been a dramatic rise in the number of extreme weather events over the past 20 years, caused largely by rising global temperatures, according to a new report from the United Nations.
根据联合国的一份新报告，在过去20年里，极端天气事件的数量急剧增加，这主要是由全球气温上升引起的。
应用推荐