To survive from one growing season to the next, often with a period of reduced or arrested growth between seasons. Used of plants or plant parts.
多年生的由一个生长季持续到下一个生长季，常指过渡四 季之间生长缩减式受抑制的时期。
Plants also convert carbon dioxide into different forms of carbon-containing molecules and the conversion process used relies on the very same enzyme that works in humans.
植物也会将二氧化碳转化成不同形式的含碳分子，而转化过程所使用的酶与人体内的酶完全相同。
Increases in seeds from pioneer plants and systematic changes in the animals hunted and the trees used for construction and fuel are evidence of environmental degradation.
先锋植物种子的增加，被猎杀的动物以及用于建筑和燃料的树木系统的变化是环境退化的证据。
Why don't we talk about the potential new sources of biofuel—so rather than corn and sugar cane—what other plants could be used?
我们为何不讨论生物燃料的潜在新来源？除了玉米和甘蔗，还有什么其他植物可以使用？
The Washington Post reported, one of the main reasons, experts say, is that farmers have used herbicides on the milkweed plants that these butterflies feed on.
《华盛顿邮报》报道，专家说，主要原因之一是，农民对马利筋植物使用除草剂，而这些蝴蝶以马利筋植物为食。
The hemiterpene matters used by the invention are all excretive by the autophage process of the plants.
本发明所使用的萜类物质均是植物自身代谢过程中分泌的物质。
Wind and solar plants could be used to drive the process of splitting water into hydrogen and oxygen – and the hydrogen piped to filling stations.
可以利用风能和太阳能工厂将水分解成氢气和氧气——然后氢气通过管道运输到加氢站。
The method has long been used by horticulturalists to propagate plants, particularly finicky flora like orchids.In the case of the redwoods, Mr.
这种方法长久以来为园艺家用来繁殖植物，尤其是像兰花这种非常挑剔的植物。
Sheila Conant: We used to have birds that pollinated specific species of plants, and some of those plants have become very rare because their pollinators have become extinct.
希拉•柯南特：曾经会有某些鸟类给一些植物授粉，但是当这种鸟类灭绝后这些植物也变得越来越稀少。
Equipped with a pair of lower jaw buckteeth it used to dig for food, the RatCroc lived on plants and grubs.
鼠鳄拥有一幅较短的配有像山羊牙齿般的吻部，用于挖掘寻找食物，它依靠植物和蛴螬为生。
As part of that drive, both America and Europe have embraced biofuels-liquids derived from plants that can be used to power cars and other vehicles.
在此目的的驱动下，美国与欧洲对生物燃料进行了利用，这是一种可从植物中提炼的液体并能够用作为汽车与其它机动车辆的能量供应。
Some elements such as uranium, commonly used as fuel in nuclear power plants, are always radioactive; there is no nonradioactive form of them that naturally occurs in nature.
一些如铀一般的元素，通常在核电厂用作核燃料，都是有放射性的；这些元素由于自身的性质是没有无放射性状态的。
To most people a gas turbine engine is the huge cylinder bolted beneath the wing of a commercial airliner, although they are also widely used in stationary power plants.
对大多数人来说，燃气轮机是一个巨大的圆柱体型的东西，安装在商用飞机上，其实它们也被广泛应用在固定的发电设备中。
Built-in mechanism of recycling distributes used, cleaned and assembled in a special jugs water for plants, which are integrated into the unusual kitchen design, or for cooking in a double boiler.
内置的回收机制分配废弃的，清洁以及收集的水到一个特殊水罐供应给植物(这些植物已经融入到特别的厨房设计)，或者供给烹饪用的双组装锅炉。
There are different kinds, or isotopes, of uranium, and the type used in nuclear power plants is called uranium-235, because these atoms are easiest to split in two.
铀有许多不同的种类，或称同位素，而在核电站中所使用的是铀235这一类，因为这些的原子最容易一分为二。
He notes that many species of algae pack a far denser punch energy-wise than the plants now used as energy crops.
他注意到许多种海藻与现在用来作为生物能源作物的植物品种相比，可压榨出能源的浓度要高出许多。
The process also produces excess methane, and the researchers say that gas can be used to power wastewater treatment plants of the future.
这一过程也会产生大量沼气。研究人员说，沼气将来可用作废水处理工厂动力。
Over the past decade, the European Union, living in close proximity to the old Soviet plants, used leverage where it could to get some of them shuttered.
过去几十年里，欧盟距离这种苏联式旧核电站很近。于是欧盟运用各种手段，在它力所能及的地方，关闭了其中一些核电站。
The method has long been used by horticulturalists to propagate plants, particularly finicky flora like orchids. In the case of the redwoods, Mr.
事实上，园艺师们在很早以前就开始利用这种方法来繁殖植株，尤其是像兰花这样比较难伺候的植物。
They clean up remains of dead plants and animals by decomposing them and returning the nutrients they hold back to the environment to be used again.
它们通过分解，清除动植物的残留物，把其中的营养成分重新释放到环境中，进行再利用。
China is expected to increasingly determine how energy is used on a global scale - from the types of cars auto companies manufacture to the kinds of power plants that are built.
预期中国将在越来越大的程度上决定全球如何使用能源，从生产什么汽车，到建造什么电厂。
The resulting damage to one of Japan's nuclear power plants has resurrected old debates about the safety and soundness of nuclear technology and its ability to be used as a viable power source.
日本核电站遭受重创已使长久以来的一大争议再度重燃，即核技术的安全性、可靠性及其是否能用作可行的电力来源。
Plants emit oxygen while they are photosynthesising, but the same amount of oxygen is used up if the carbon compounds they make are broken down.
植物在光合作用的时候会释放氧气，但是有机物分解时也需要相同量的氧气。
Plants emit oxygen while they are photosynthesising, but the same amount of oxygen is used up if the carbon compounds they make are broken down.
植物在光合作用的时候会释放氧气，但是有机物分解时也需要相同量的氧气。
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