退化的情形是怎样的？
先锋植物种子的增加和被猎杀动物的系统性变化是环境退化的证据。
Increases in seeds from pioneer plants and systematic changes in the animals hunted are evidence of environmental degradation.
这涉及到把年轻珊瑚从一个健康珊瑚礁移到一个退化的珊瑚礁上，通过促进年轻健康的珊瑚来接管，试图使退化的珊瑚礁再生。
This involves moving young coral from a healthy reef onto a degraded reef, in an attempt to regenerate the degraded reef by encouraging young healthy coral to take over.
世界自然基金会的一项研究显示，由于污染、气候变化和过度开发，中国的湿地正遭受退化的严重威胁。
A WWF research showed China's wetlands were seriously threatened by degradation because of pollution, climate change and overexploitation.
它还是土地和水资源退化的一大根源。
当接近这些极限时各种架构退化的方式。
The manner in which various architectures degrade as these limits are approached.
退化的受体无法正确的传递信息。
研究发现，土地退化的主要驱动力是不良的土地管理。
The study found that degradation is being driven mainly by poor land management.
当社区获得退化的森林并接到恢复该森林的指示时，这些社区通常会照做。
Where communities were given degraded forest and instructed to regenerate it, they generally did so.
估计有15亿人，或占世界人口四分之一的的人直接依靠正在退化的土地为生。
An estimated 1.5 billion people, or a quarter of the world's population, depend directly on land that is being degraded.
比如人类胚胎会发育出腮、蹼足和退化的尾巴，映现出远古水生生物的性状。
Human embryos, for instance, develop, then lose, gills, webbed feet and rudimentary tails, reflecting their ancient aquatic life styles.
研究结果进一步揭示了白藜芦醇防止因缺乏使用而引起的机能退化的潜在机制。
Study results further demonstrated some of the underlying mechanisms by which resveratrol ACTS to prevent the wasting adaptations to disuse-induced mechanical unloading.
一个主要的问题是，退化的土壤变得密实，造成吸水量减少，从而导致水从地表流失并将表土带走。
One major problem is that degraded soils become compacted and so absorb less water, which then tends to run off the surface, taking topsoil with it.
例如，科学家知道没有四肢的蛇钻洞更有效率，但是它们的四肢究竟是如何退化的，依然是个谜。
For instance, although scientists know snakes can burrow more efficiently without arms and legs, exactly how they lost their limbs remains a mystery.
并且它们不断增长的发生频率是亚马逊森林退化的一部分——这种变化可以作为一大片地区环境变化的指示器。
And their increasing frequency is an important part of the degradation of the Amazon forest-and could be an indicator of large-scale environmental change.
由于中风或老年痴呆症而导致生活行为退化的老年人，对于狗提供的无条件的情感常常能作出积极的回应。
The elderly, who have become withdrawn due to stroke or age-related dementia, 4 often respond positively to the unconditional affection that dogs offer.
由于标记T细胞的渗入现象只能在那些退化的肿瘤中被发现，说明肿瘤免疫排斥现象与标记T细胞的吸收有关。
Tumor rejection was correlated with the uptake of labeled t cells, since the infiltration of labeled t cells was only observed in those tumors that went on to regress.
虽然很多原始人的骨骼被检测出有骨折或者是关节炎的症状，但这些退化的迹象并不能得出它们是肥胖所致的这一结论。
Many old bones do have stress fractures or signs of arthritis, but it's hard to conclude that these indications of degradation are due to obesity.
这项装置，名为视网膜下植入元件，位于视网膜下部，可以直接取代视网膜退化失去的光受体而发挥作用。
The device — known as a subretinal implant — sits underneath the retina, directly replacing light receptors lost in retinal degeneration.
畜群同时造成大范围土地退化，其中20%的牧场因过度放牧、土壤板结和侵蚀而退化。
At the same time herds cause wide-scale land degradation, with about 20 percent of pastures considered as degraded through overgrazing, compaction and erosion.
人们谈论减少伐木和林地退化造成的碳排放（REDD）已经几年了，但哥本哈根峰会让我们第一次有机会看到它在全球范围内得到应用。
REDD or Reducing Emissions from Deforestation and Degradation (Redd) has been talked about for years but the summit at Copenhagen is the first opportunity to see it implemented on a global scale.
该方案为各国提供了各种奖励措施，以防止森林地区受到包括树木砍伐、农业扩张和土地退化在内的各种影响，把碳释放进大气。
It offers nations incentives to protect forest areas from a variety of impacts that release carbon into the atmosphere, including tree felling and logging, agricultural expansion, land degradation.
该方案为各国提供了各种奖励措施，以防止森林地区受到包括树木砍伐、农业扩张和土地退化在内的各种影响，把碳释放进大气。
It offers nations incentives to protect forest areas from a variety of impacts that release carbon into the atmosphere, including tree felling and logging, agricultural expansion, land degradation.
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