有几种假说，包括地球变暖或变冷，季节波动或洋流的变化，以及大陆位置的变化。
There are several hypotheses, including warming or cooling of Earth, changes in seasonal fluctuations or ocean currents, and changing positions of the continents.
所有农业地区的季节波动很普遍。
Seasonal variations, however, are common to all farming areas.
蔬菜价格根据季节波动。
水果价格随着季节波动。
杓兰的叶片性状是对水肥条件较好，但季节波动较大生境的适应。
The leaf traits of Cypripedium were the adaptation to the environment rich in water and nutrients but easy to change with seasons.
泉水系统属非线性动力系统，泉水月流量序列具有季节波动的特点。
The spring water system is a nonlinear dynamic system and its monthly discharge is characterized by seasonal fluctuations.
这样做，可以通过提高农业生产率和减少粮食供应的季节波动，增加粮食的可供量和种类。
Doing so, it may be possible to increase the availability and variety of food by improving agricultural productivity and reducing seasonal variations in food supplies.
在航线设计中加入季节波动因素能够更好地避免该问题，从而使航线设计更加符合实际情况。
Joining the season fluctuation factor in the route design can be able to avoid this question well, thus causing the route design even more to tally with the actual situation.
从季节变动来看，蔬菜价格有一定的季节波动性，但大棚菜和外来蔬菜的价格波动并不十分明显。
From the view of varieties of season, the price of vegetable fluctuates according to the season, but the fluctuate price is very low in establishment and foreign vegetables.
研究发现我国的信贷资金运行存在明显的季节波动特征，但是波动趋势逐渐走向平缓，信贷季节波动受经济活动的季节周期和信贷管理政策双重决定。
It is shown that the quarterly fluctuation is significant, though such trend is flatter. The fluctuation is co- affected by quarterly cycle of business behavior and credit policy.
这些比率记录了空气温度随季节和年份的波动。
These ratios register the fluctuations of air temperatures over the seasons and years.
相反，诸如季节性温度变化等高频波动是可以观察到的，而且在某种程度上是可以预测的，因此群体可以相应地调整它们的行为。
In contrast, high-frequency fluctuations such as seasonal temperature variations are observable and somewhat predictable, so that groups could have adapted their behaviors accordingly.
比较了感染率的季节性波动和对Corbicula fluminea 的危害。
The seasonal fluctuations about infectation percentage and the harm on the Corbicula fluminea were compared.
为了避免每月天气和其他临时因素造成的波动，数值应用了随季节调整的三个月移动平均年比率。
To avoid monthly gyrations caused by weather or other temporary factors, the figures use three-month moving averages of seasonally adjusted annual rates.
因此有着季节性的波动。当雪天来临时，就业机会就会消失。
So have seasonal fluctuations. Jobs used to disappear when the snow fell.
每一季度的GDP数据因季节性因素(农业仍是经济的最大组成部分)和少数大型外企的活动而发生波动。
Quarterly GDP Numbers are swayed by seasonal factors (agriculture is still a biggish part of the economy) and by the activities of a handful of big foreign-owned firms.
因此有着季节性的波动。
杜兰用自己最喜欢的研究工具谷歌地图指出，因为农业耕作，就业波动更像是季节性的而非周期性的。
Fluctuations in the job market tend to be seasonal rather than cyclical because of the agricultural calendar, a point that Mr Duran illustrates with his favourite research toy, Google Earth.
在许多领域的价格波动取决于季节的一年。
In many areas price fluctuations depend on the season of year.
历史上，水力发电是智利主要的电力来源，但水力发电受制于季节和气候的改变，例如降雨量的波动等。
Historically, hydropower has been Chile's major power source, but hydropower is vulnerable to seasonal and climatic changes - i. e. fluctuations in rainfall quantity.
但中性皮肤随季节影响波动较大，夏天趋向油性，冬天趋向干性。
However, normal skin with seasonal fluctuations, the summer tends to oil, winter tends to dry.
蔬菜和水果的价格随季节而波动。
The prices of vegetables and fruits fluctuate with the seasons.
潜水面的高度也随著季节而稍有波动。
The level of the water table also fluctuates slightly with the season.
蔬菜和水果的价格随季节而波动。
The prices of vegetable and fruit fluctuate according to the season.
假日会给该数据的季节性因素调整加大了难度。许多经济学家转而关注四周移动平均值数据，它抹去了每周的波动因素。
Holidays make it tricky to seasonally adjust claims. Many economists instead focus on the four-week moving average, which irons out weekly fluctuations.
建造天然气地下储气库可从根本上解决城市季节性调峰问题，是平抑供气峰值波动最合理、有效的途径之一。
Constructing natural gas underground storages is the most reasonable and effective means to fundamentally solve the issues of seasonal peak shaving of urban gas.
利用标准x - 11方法分析国际油价季节性波动，探讨油价运动规律，为我国进口石油提供信息支持。
Using standard X -11 method, we analyze seasonal fluctuation of international oil price and discuss its movement discipline, in order to provide information support for importing oil of our country.
成熟叶片在四个季节中表现为稳定的景天酸代谢(CAM)，且光期有较长时间的CO_2吸收，几乎无CO_2向外释放，有显著的昼夜酸度波动。
The mature leaves perform stable Crassulacean acid Metabolism (CAM), which uptake and rarely release CO2 for most times during the light period, and express marked diurnal acid fluctuation.
季节性时间序列具有增长性和波动性的二重趋势。
The seasonal time series has the double trends of increasing and fluctuating.
阳光如此罕见，以至于我的朋友们都忘了把太阳镜放到哪里去了。阴郁的天气让很多在这儿生活的人都遭受季节和情绪波动的困扰。
The sun shines so rarely that my friends forget where they put their sunglasses. duanwenw. com The gloomy weather causes many people around here to suffer from seasonal and emotional disorder.
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