Certain irrigation practices degrade soil quality and reduce agricultural productivity.
某些灌溉措施会降低土壤质量，降低农业生产力。
But if silent genes degrade within 6 to 10 million years, how can long-lost traits be reactivated over longer timescales?
但是，如果沉默基因在600万到1000万年内退化，那么失去已久的性状如何在更长的时间内被重新激活呢？
We've been talking about the decline of coral reefs in tropical areas all over the world—how natural and man-made stresses are causing them to degrade or in some cases, to die.
我们之前提到了世界各地热带地区中珊瑚礁的衰落，即自然和人为（造成的）压力是怎样造成珊瑚礁退化，或者甚至在某些情况下，造成它们死亡的。
It will take at least 100 years for them to degrade naturally.
至少需要100年它们才能自然降解。
Experts have pointed out that the materials used in masks are difficult to degrade.
专家指出，口罩所使用的材料很难降解。
How quickly does working memory degrade?
工作记忆的消退有多快？
Nancy Rabalais: Eventually, oil does degrade.
南希·拉尔莱：最终石油是会降解的。
As they degrade, the phosphates migrate into the soil.
它们在降解以后，磷酸盐会进入土壤。
The sun's UV rays can degrade and prematurely age wine.
阳光中的紫外线可以分解葡萄酒，让葡萄酒提前熟化。
Allows content to degrade gracefully when displayed in older browsers.
在老式浏览器中显示时，允许内容平稳地退化。
Pops can cause cancers and birth defects and take a long time to degrade.
持久性有机污染物(Pops)会导致癌症和出生缺陷，而且降解速度非常缓慢。
You'll notice as your collections grow that query performance will degrade.
您将注意到随着您的集合增长查询性能将会降低。
When beams of light pass through a fiber optic cable, they tend to degrade.
当光束通过光纤，光强度趋于降低。
Such sweeps can degrade performance of the source, affecting other applications.
这种彻底搜索可能会降低数据源的性能，并影响到其他应用程序。
The manner in which various architectures degrade as these limits are approached.
当接近这些极限时各种架构退化的方式。
Never let a person use names or words to hurt or degrade you or your partner.
不要允许别人用称呼或语言来伤害你和你的伴侣。
Similarly, cosmic and solar flare radiations degrade electro-mechanical systems.
同样地，宇宙射线和太阳耀斑的辐射也会损害机电系统的功效。
Unfortunately, changing the apparent sector size in firmware can degrade performance.
遗憾的是，在固件中改变表面扇区大小会降低性能。
Then immediately, the environment starts to degrade again until the next cleaning.
随即，环境又开始变差，直到下一次清洗。
HTML 5 was explicitly designed to degrade gracefully in browsers that don't support it.
HTML5的设计原则就是在不支持它的浏览器中能够平稳地退化。
POPs do not degrade easily, but remain intact in the environment for long periods of time.
POP不易降解，可以长期完整地存在于环境中。
How many malicious users can a tagging system tolerate before results significantly degrade?
在服务质量明显变坏之前，一个标签系统能忍受多少的恶意用户？
If the cache occupies too much memory, it can actually degrade the performance of the application.
如果缓存占用太多内存，则有可能会降低应用程序性能。
If my neighbors grow inferior corn, cross-pollination will steadily degrade the quality of my corn.
如果我邻居种植的是次等玉米，交叉授粉将会逐渐降低我的玉米的品质。
Even though they'd make me more money, in my opinion they degrade the visitor experience too much.
即便它们可以给我带来更多的收入，但我觉得它们会影响读者的阅读体验。
We must be careful to use Ajax to enhance the user experience of our applications, not degrade it.
在我们的应用程序中我们一定要更加谨慎地使用Ajax来增强用户体验，而不是削弱它。
Just one warning: Avoid sarcasm, mockery, and any other forms of humor that degrade or hurt others.
但有一点必须注意：一定要避免讽刺和嘲弄，避免任何诋毁和伤害他人的幽默形式。
Just one warning: Avoid sarcasm, mockery, and any other forms of humor that degrade or hurt others.
但有一点必须注意：一定要避免讽刺和嘲弄，避免任何诋毁和伤害他人的幽默形式。
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