1·X-rays can penetrate many objects.
X射线能穿透很多物体。
—— 《柯林斯英汉双解大词典》
2·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。
3·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。
4·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。
5·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.
这些（噪音）可以是穿透教室建筑结构的室外活动声、教学活动的声音以及室内产生的其它各种声响，这些声音都会因为房间的回声效果而被放大。
1·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。
2·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。
3·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.
与此同时，网络上的蜘蛛、蠕虫、代理程序和其他类型的自动化病毒越来越多，这些病毒旨在渗透站点，寻找信息并对其进行分类。
4·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。
5·We cannot penetrate into the nature of substances.
我们无法渗透到物质的本质中。