When they detect an extended dry period, they divert their metabolisms, producing sugars and certain stress-associated proteins and other materials in their tissues.
当它们发现干旱期延长时，它们会改变自己的新陈代谢，在它们的组织中产生糖和某些与应激相关的蛋白质和其他物质。
But sometimes, no rain falls, for a long, long time. Then there is a dry period, or drought.
根据上文可知，很久未下雨，于是便有一段“干旱”“旱灾”由此可见。
The frequency of extreme drought in the dry period is much higher than that in the wet period.
在气候处于少雨时期，极端干旱频率远高于多雨时期。
So, it can be concluded that sand drift activity and aeolian landform forming are mainly taking place in warm dry period.
可见，区内风沙活动及风成景观的塑造过程，主要是在暖干期进行的。
Rainwater collected by the coverage is directed to an underground reservoir serving the garden irrigation during dry period.
通过覆盖面直接收集雨水并将其引导到地下储层，在干旱期间用于花园灌溉。
After a dry period, the first rain running down the tree bark contains most nutrients, dissolved from wind-blown dust and organic matter.
经过一个干季，第一次雨沿着树干降落下来，带着尘土和有机物的机体。
It is thought that 70, 000 years ago a dry period caused Red Sea levels to fall and the gap across its mouth to shrink from 18 miles to eight miles.
据认为，7万年前的一段干旱时期造成红海水位下降，跨越海口处的距离从18英里缩小到8英里。
Be sure to also provide a clean environment with minimal bacterial contamination throughout the dry period to help further reduce the risk of new infections.
一定要在整个干奶期提供一个清洁的环境，达到最小的细菌污染，以帮助进一步减少新的感染的危险。
According to forecast, water flow shall be low during dry period of 2006-2007 and water supply in the Pearl River Delta shall be threatened by salty tide again.
据预测，珠江流域2006—2007年度枯水期来水依然偏枯，珠江三角洲地区将因咸潮继续面临严峻的供水局面。
It increased the loss in body weight and aggravated the negative energy balance, while the cow fed with low energy diet during the dry period increased 6% of the DMI and 6% of MY.
而干奶期低能饲喂奶牛，干物质摄入增加(达6%)，产奶量增加(达6%)，产后失重减少，能量负平衡减轻且持续时间缩短。
An analysis is made of the main distribution of water content in the key period, which provides a physical basis for the study of artificial precipitation in cumulus in the southern summer dry period.
分析了含水量在关键时段的主要分布情况，为研究南方夏旱期积云的人工影响方法提供物理依据。
Their absence supports the picture of a cold, dry Mars that never experienced the extended mild period required to form lakes and oceans.
它们的缺失使寒冷、干燥的火星经历了从未经历过形成湖泊和海洋所需的延长温和期的景象。
The dry mountain ranges of the western United States contain rocks dating back 440 to 510 million years, to the Ordovician period, and teeming with evidence of tropical marine life.
美国西部干燥的山脉包含了距今4.4亿至5.1亿年前的奥陶纪岩石，其中充斥着热带海洋生物生存的迹象。
It was about the period that my narrative has reached: a bright frosty afternoon; the ground bare, and the road hard and dry.
大概就是我的故事正讲到的那个时期——一个晴朗而严寒的下午，地面是光秃秃的，道路又硬又干。
This time period, in the springtime, is traditionally when we have high winds and dry weather, so this is our normal fire season.
我们这里的春天，传统上讲是风大干燥的季节，也是火灾多发季节。
The surface may not have been wet for all of that period, notes Dr Grotzinger, but groundwater could have persisted even when the surface was temporarily dry.
在那一时期，火星地表或许不会一直都有水存在，格罗青格博士指出，但会存在地下水，即便地表暂时干涸。
In order to improve the general performance of dry-type power transformer and to shorten new product development period, computing aided design should be further studied and applied.
为了进一步提高干式电力变压器的总体性能，缩短新产品的开发周期，有必要对其计算机辅助设计进行更深入的研究。
The post-natal body restores normally approximately needs for 6 weeks, this period should avoid dry participating in the physical labor.
产后身体恢复正常约需要6周，这期间应避免过旱参加体力劳动。
But re watering during different growth period had a different effect on dry matter accumulation of each plant organ.
但是，不同时期恢复供水，对植株各器官干物质增长和产量形成的促进作用有所不同。
The results showed that there was continuously accumulating of dry matter during the whole growth and development, but the accumulative amount and intensity varied in various period.
结果表明：在果实发育的整个过程都有干物质的不断积累，但不同时期其积累量和积累强度不同；
The distribution rates of dry matter of its organs changed greatly during its growth period.
车前各器官干物质分配率在生育期间有较大变化。
Overlong fermentation period resulted in the pit mud dry, pale colour and lustre, coarse, and bad strength of the fermenting grains which could influence the liquor quality.
发酵周期过长可引起窖泥发干，糟醅的色泽暗、发黄、显糙、不柔熟、骨力差等现象，影响酒的产质。
Storage period stored in a dry and cool place, Unopened product can be stored for one year.
贮存期存放于阴凉干燥处，未启封产品可保存一年。
The result shows that Yunnan Guizhou Plateau is a high dry matter production area for middle rice, because of higher radiation, lower temperature and longer growth period.
模拟结果表明，贵阳气温低、生育期长，其中稻生育期内温度适中、光照较强，干物质生产力高。
It has been proved by practice that the optimum design of dry-type power transformer can improve performance parameter, reduce product weight and shorten the design period.
实践表明，该系统设计的优化方案可提高性能参数、降低产品重量、减少成本，缩短设计周期。
Whether the flowers of Rosa rugosa Thunb treated with 1125 were dry or fresh, the optimal period was the flower bud stage.
经1125处理的玫瑰，无论是干花还是鲜花，适采期均为蕾期，比对照提前1天。
Biomass production in the entire growth period, dry matter accumulated before and after heading stage, economic coefficient in high-yield rice were higher and their deviations were relatively narrow.
高产水稻株系的抽穗前物质生产量、抽穗后物质生产量、生物产量以及经济系数均较高且变异系数相对较小。
The first paratyphoid early clinical symptoms were mainly fever, dizzy, headache, pharyngoxerosis, pharynx-ache and dry-cough with 7-27 days of incubation period, average 15 days.
甲型副伤寒早期临床症状以发热、头晕、头痛、咽干、咽痛、干咳为主，潜伏期7 ~ 27天，平均15天。
The first paratyphoid early clinical symptoms were mainly fever, dizzy, headache, pharyngoxerosis, pharynx-ache and dry-cough with 7-27 days of incubation period, average 15 days.
甲型副伤寒早期临床症状以发热、头晕、头痛、咽干、咽痛、干咳为主，潜伏期7 ~ 27天，平均15天。
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