这在经济气候已经改变的条件下是不可能的。
气候条件再次恶化。
必须能够确定所推断的气候条件所维持的时间。
It must be possible to determine the time at which the inferred climatic conditions held.
但是，气候条件存在波动，造成干湿天气交替，以致可以获取的动植物数量忽高忽低。
There were, however, fluctuations in the climatic conditions, with the consequences that wet conditions were followed by dry ones, so that the availability of plants and animals oscillated brusquely.
奥林匹克土拨鼠栖息的草地在奥林匹克山脉的高地，那里的气候条件要恶劣得多。
The Olympic marmots inhabit meadows high in the Olympic Mountains where the weather conditions are much harsher.
另一项调查将气候条件、乡愁和“澳大利亚乡村荒凉的面貌”作为离开的主要原因。
Another survey gave climate conditions, homesickness, and "the stark appearance of the Australian countryside" as the main reasons for leaving.
在调查过去的气候条件时使用的一种非常古老的方法是测量古代湖泊的水位。
One very old method used in the investigation of past climatic conditions involves the measurement of water levels in ancient lakes.
那是一个真正关键的问题——我们可以适应的温度或气候条件的范围是什么，我们什么时候会超过这些范围？
That's a real critical issue--what is the range of temperature or climate conditions to which we can adapt, and when do we exceed those?
没有合适的生长条件，树木就不能长得很高大。还有一些证据表明，在世界气候温暖的时候，尤其是在原本已经很温暖的环境里，树木的生长可能会放缓。
Without the right growing conditions, trees cannot get really big, and there is some evidence to suggest tree growth could slow in a warmer world, particularly in environments that are already warm.
但在某些水域，如北极水域，气候变暖将使浮游植物的生存条件变得更加恶劣。
But in some waters, such as those of the Arctic, a warming will make conditions worse for phytoplankton.
在选择确定过去存在的气候条件的方法时，古气候学家援引了四个主要标准。
In choosing a method for determining climatic conditions that existed in the past, paleoclimatologists invoke four principal criteria.
在一些地区，沙漠区域的扩张主要是当地气候条件趋于干燥的结果。
In some regions, the increase in desert areas is occurring largely as the result of a trend toward drier climatic conditions.
小气候是一组影响局部地区的气候条件，如温度、风、湿度等天气特征。
A microclimate is a group of climate conditions that affect a localized area, weather features like temperature, wind, moisture and so on.
同样有趣的是，相邻的小气候可能有非常不同的条件。
It's also interesting to note that microclimates that are near each other can have very different conditions.
世界上有些地区煤炭和矿产供应充足，土壤肥沃，气候宜人；而其他地区则不具备这些条件。
Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a favourable climate; other regions possess none of them.
由于牛羊不能在恶劣的气候条件下生存，每年冬天都要把它们带到南方去。
Since sheep and cattle can't survive harsh climates, they needed to be taken south every winter.
当玉米从墨西哥传到欧洲的时候，他们有了一种更耐寒的作物，更容易在更偏北的气候条件下种植，权力的中心也随之转移。
When corn came to Europe from Mexico, now they had a much hardier crop that could be grown easily in more northerly climates and the centers of power began to shift accordingly.
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。
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.
在图拉尼亚高原的气候条件下，没有饲料储备，游牧生活是不可能的。
In the climate of the Turanian plateau, pastoral life is impossible without supplies of fodder.
任何武器应能经得住任何严酷的气候条件。
农业成功有赖于土地资源和气候条件。
Agricultural success depends on the land resource and climate conditions.
预测能够预知常常与暴发风险增加有关联的气候条件，并且可以改善疾病控制。
Forecasting can predict climatic conditions that are frequently associated with an increased risk of outbreaks, and may improve disease control.
传播还取决于可能影响蚊虫数量和存活的气候条件，例如降雨模式、气温和湿度等。
Transmission also depends on climatic conditions that may affect the number and survival of mosquitoes, such as rainfall patterns, temperature and humidity.
'智人刚开始进化不久，恶劣的气候条件几乎灭绝我们人类，'马里恩教授说。
'Shortly after Homo sapiens first evolved, the harsh climate conditions nearly extinguished our species,' said Professor Marean.
湿度、温度、海拔、污染和气候条件对皮肤和头发有不同程度的影响。
Humidity, temperature, altitude, pollution, and climate conditions have different effects on skin and hair.
这意味着气候条件或其他影响产量变化的因素可能导致大的价格波动。
This means that changes in weather conditions or other factors affecting output can lead to really large price fluctuations.
传播还取决于可能影响蚊虫繁衍的气候条件，例如降雨模式、气温和湿度等。
Transmission also depends on climatic conditions that may affect the abundance and survival of mosquitoes, such as rainfall patterns, temperature and humidity.
索马里海盗利用海洋气候条件的改善，加快对外国船只的袭击。
Somali pirates took advantage of improved weather conditions at sea and stepped up their attacks on foreign ships.
但这个天平需要对变化的条件不断进行调整——尤其是对气候变化引起的威胁。
But the scales require constant adjustment in response to shifting conditions-not least of which is the threat posed by climate change.
但这个天平需要对变化的条件不断进行调整——尤其是对气候变化引起的威胁。
But the scales require constant adjustment in response to shifting conditions-not least of which is the threat posed by climate change.
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