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。
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。
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。
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。