Over time, unprotected exposure can contribute to cataracts, as well as cancer of the eyelids and the skin around the eyes.
长时间毫无保护的眼部暴露会导致白内障，或者一种眼脸和眼部周围皮肤可得的癌症。
Without any available cohort studies to test exposure over a long period of time, though, they have had to rely on lab studies, which failed to find any clear or reproducible biological effects.
没有任何可用的队列研究，以测试长时间暴露在电磁场中的后果，他们不得不依赖实验室研究，目前未找到任何明确或可复制的生物效应。
This means that exposure time can be extremely short even in poorly lit conditions.
这意味着，即使在光线并不足的条件下，曝光时间仍然可以极短。
This way, any vibrations induced by the mirror have time to settle down before the exposure begins.
由此，镜面翻转造成的震动就有时间在曝光开始前缓和下来。
The researchers believe that the sunburns will worsen over time, due to increased ultraviolet radiation exposure.
研究人员相信灼伤会因为紫外线照射的暴露，随着时间而恶化。
So continuous exposure over time could leave substantial amounts of inflammatory particles in the brain, he speculates.
因此，长时间持续接触污染物会使得大量致炎粒子停留在脑部，他推测道。
Exposure is particularly high among women and children, who spend the most time near the domestic hearth.
在妇女和儿童中暴露极高，他们大多数时间在炉边度过。
Exposure is particularly high among women and young children, who spend the most time near the domestic hearth.
妇女和年幼儿童在炉边呆的时间最长，他们所接触的污染特别多。
A long exposure time captured stars (seen as white flecks in the sky) and the exceptional light in this image.
长时间曝光捕捉到图中的那些星星(空中白色的斑点)和特殊的光。
The long exposure time required for moonlight photography often means that the moon may have moved significantly over the course of the exposure.
夜间摄影需要长时间曝光，这就意味着月亮可能会在曝光期间有很明显的移动。
Usually one can first meter using a larger aperture (so that the metered exposure time is under 30 seconds), then stop down as necessary and multiply the exposure time accordingly.
通常，你可以用大点的光圈测光(这样，测量的曝光时间就在30秒以内)，随后缩小光圈，相应地增加曝光时间。
You will be exposing both the lightning and the foreground and background when you are taking these pictures. The ambient light will determine your exposure time.
在曝光时你要照顾到闪电和前后景，周边的光线会限制你的曝光时间。
Regular exposure to such messages could intensify over time, creating a vicious cycle that keeps women from reaching the top of high-status fields.
那么，如果频繁接触这样的信息，就会加深对歧视依然存在的看法，从而导致恶性循环，不利于女性提升自己的地位，问鼎事业的辉煌。
This first photograph was captured during an eight hour exposure, taking so much time that the sun passed overhead and thus illuminating both sides of the courtyard.
第一张照片是曝光8个小时后得到的，由于曝光时间太长，太阳从这头照到那头，使得照片里的院子两边都同样明亮。
The only proven biological effect of radiation at Chernobyl was an increase in thyroid cancer among those who were children at the time of exposure.
托马斯（Gerry Thomas）指出，切尔诺贝利核扩散可能增加儿童甲状腺癌症发生率的风险性预测，唯一能得到生物学效应证明的只是那些当时直接暴露在核辐射下的儿童。
Low dose exposure to caesium-137, even over a long period of time, is perhaps not as damaging to health as we would have predicted.
低剂量的铯137辐射，即使辐射时间很长，恐怕也不会造成我们所设想的那种对健康的破坏。
It has a wide-aperture lens to capture as much light as possible, and the technology requires no clunky auto-focus mechanism. It adjusts exposure time automatically.
它的大光圈镜头可以摄入尽可能大的光量，所用技术并不需要笨重的自动对焦系统，曝光时间也是自动调节。
Poor outcomes are largely related not only to dosage but to a woman's stage of pregnancy at the time of exposure; first and second trimesters are of the most concern.
缺陷在很大程度上不仅取决于照射的剂量还取决于孕妇阶段所受到的照射。最初的三个月和其后三个月是最重要的阶段。
Or maybe we’re somehow transformed over time by our darkened working environments and exposure to computer screen radiation.
也许我们某种程度上就是被漆黑的工作环境和电脑辐射慢慢变得奇怪的。
A long exposure time captured stars in this photo-and the brief balanced light from both a fading moon and a brightening eastern sky.
长时间曝光捕捉到照片中的星星，以及淡出的月亮和明亮的东部天空短暂的平衡光。
Reducing the time spent in sunlight helps minimise exposure to UV radiation, which creates free radicals known to damage and age tissues prematurely.
阳光下活动减少意味着暴露于紫外线辐射的时间缩短，而紫外线辐射会生成自由基，对机体造成损害并加速组织衰老。
In people, XPA is at prime DNA-repairing levels in the morning, which thus looks the safest time for UV exposure.
对人来说，XPA的DNA修复水平在早晨最好，因此早晨看起来是日光浴的最安全时段。
A full moon can be a savior for reducing the required exposure time and allowing for extended depth of field, while a moonless night greatly increases star visibility.
满月可以帮你减少曝光时间、扩大景深，而月光暗淡的夜晚增加了星星的可见度。
The prolonged exposure to these free radicals over time will cause progressive vicariations, which lead to cellular damage and eventual joint destruction.
随着时间的推移，这些自由基会造成渐进损害，最终导致细胞伤害，破坏关节。
Photos are unavoidably limited by the trade-off between depth of field, exposure time and image noise.
你必须在景深、曝光时间和噪点之间做出权衡。
Photos are unavoidably limited by the trade-off between depth of field, exposure time and image noise.
你必须在景深、曝光时间和噪点之间做出权衡。
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