2. Air cannot penetrate between the soil particles, making the soil oxygen-poor.
空气不能穿透土壤颗粒，这使得土壤中缺少氧气。
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3. Wherever these particles settled, they formed a pan, a layer that water couldn't penetrate.
不管这些粒子沉降在哪里，它们会形成一个平面板块，一层水无法渗透的平面。
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4. Heat, too, makes our environments tolerable and some ultraviolet rays penetrate the atmosphere.
热也使我们的环境变得适宜生存，而且一些紫外线会穿透大气层。
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5. Not everyone agrees, but some experts are convinced that whatever created the SPA Basin did penetrate the Moon's mantle.
并不是每个人都同意这个观点，但一些专家相信，无论塑造SPA盆地的是什么，它确实穿透了月球的地幔。
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6. Without those masses of cooling sea ice, warm air brought to the Arctic can penetrate further inland than it ever did before.
如果没有这些大量冷却的海冰，被带到北极的暖空气可以比以前更深入渗透到内陆。
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7. Many carnivorous plants secrete enzymes to penetrate the hard exoskeleton of insects, so they can absorb nutrients from inside their prey.
许多食肉植物分泌酶以穿透昆虫坚硬的外骨骼，以从猎物体内吸收营养。
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8. There're two reasons for this: first, they live in the active layer, which, remember, contains water that doesn't penetrate the permafrost.
造成这种情况的原因有两个：首先，它们生活在活动层中，请记住，活动层中包含的水不会渗透永久冻土。
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9. These have adapted to the environment by the development of long taproots that penetrate downward until they approach the assured water supply provided by groundwater.
这类植物通过生长出长长的主根来适应环境，这些主根可以向下渗透，直达地下水提供的充足水源。
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10. At the same time, the Net is increasingly populated with spiders, worms, agents and other types of automated beasts designed to penetrate the sites and seek out and classify information.
11. These levels come from outside activities that penetrate the classroom structure, from teaching activities, and other noise generated inside, which can be exacerbated by room reverberation.
