牙齿有一层叫做釉质的坚硬表层。
这种治疗需要把死皮的表层除去。
This treatment involves scrubbing off the top layer of dead skin.
“ElNino（厄尔尼诺）”在西班牙语中是“孩子”的意思，当南太平洋表层海水异常变暖时，会出现厄尔尼诺现象。
El Nino, Spanish for "the child", occurs when surface ocean waters in the southern Pacific become abnormally warm.
在某些情况下，松散的土壤全部被风吹走，只剩下石质化的表层。
In some cases, the loose soil is blown completely away, leaving a stony surface.
如果前者较大，这个湖就是一个以表层水为主的湖泊；如果是后者，则是一个以渗漏为主的湖泊。
If the former are greater, the lake is a surface-water-dominated lake; if the latter, it is a seepage-dominated lake.
尽管如此，天文学家们仍然相信，当一颗彗星接近太阳时——这是他们可以研究它的地方——太阳的高温将会移除损坏的表层，露出内部。
Nevertheless, astronomers still believed that when a comet approached the Sun—where they could study it—the Sun's intense heat would remove the corrupted surface layer, exposing the interior.
所有流水尽管看起来是一样的，实际上是分成了大量相互碰撞的内在表层。
All flowing water, though it appears to be uniform, is actually divided into extensive inner surfaces, or layers, moving against one another.
不管怎样，营养物质存在于活性层深处而不是在表层附近，活性层受径流影响最大的地方。
The nutrients are deep down in the active layer anyway, not high up near the surface, which is the part of the active layer most affected by run-off.
这意味着表层土壤几只含有少量长期成功耕作所必需的成分。
This means topsoil contains few of the ingredients needed for long-term successful farming.
尼罗河虽然在一年的大部分时间里平静而祥和，但是过去每年都会泛滥，从而生成、灌溉并把新的表层土搬运到附近的古埃及人赖以为生的农田。
Calm and peaceful for most of the year, the Nile used to flood annually, thereby creating, irrigating and carrying new topsoil to the nearby farmland on which ancient Egypt depended for livelihood.
无论你是处理文字或图画、像素或者代码、你的创造力往往来自于意识思想的表层之下。
Whether you work with words or paint, pixels or code, your creativity comes from somewhere beneath the surface chatter of conscious thoughts.
由于浓度的增加，植物的再生长很少，导致侵蚀增加，使得肥沃的表层土壤减少，再生长更少。
Because of this increased concentration, regrowth of plants is minimal, leading to increased erosion, which leads to a decrease in the fertile topsoil, leading to even less regrowth.
石油和天然气的密度都比水小，所以二者通常会浮在被水浸泡的岩石和沉积物的表层。
Both oil and gas are less dense than water, so they generally tend to rise upward through water-saturated rock and sediment.
然而，耕地被认为是对表层土壤造成严重损害的罪魁祸首，因为它清除了那些保护土壤不被吹走或冲走的植物。
However, plowing is blamed for causing severe damage to top soil by removing the plants that protect soil from being blown or washed away.
然而，这是第一次将电池板设计成可直接铺设在现有道路表层，同时也是第一次将电板安装于公共道路的项目。
However, this is the first time a panel has been designed to be laid directly on top of existing roads and the first project to install the panels on public highways.
降水往往会把细小的粘土颗粒转移到土壤的最微小的空隙中，使这些空隙变得封闭，从而形成了一种几乎不允许任何水分渗透下来的表层土壤。
The impact of raindrops on the loose soil tends to transfer fine clay particles into the tiniest soil spaces, sealing them and producing a surface that allows very little water penetration.
冬季的风暴搅动大海，将表层海水与深层海水相混合。
Winter storms, it turns out, churn the ocean, mixing surface waters with deeper waters.
它们非常有用，比如说，能让我们更好地了解物质的表层属性。
They are very useful, for example, in understanding the properties of material surfaces.
他们现在正着手优化该技术，以使其能应用于各种表层的油画。
They're now working on refining the technique, so that it can be used with paintings on various surfaces.
最终，表层浮游植物耗尽了可获取的养分使其增长放缓。
Eventually, the surface phytoplankton exhaust the available nutrients and slow their growth.
——为什么太阳的大气层比表层更热？
而AIDSVAX包含一种艾滋病病毒表层的基因工程蛋白。
AIDSVAX contains a genetically engineered version of a protein on the surface of HIV.
暴风雨没有温暖的表层海水，根本难以持续。
The storms simply couldn't continue on without warm surface water to sustain them.
影是植物覆盖着的表层对生态系统最大的贡献。
Shade is vegetated surfaces' primary service to the ecosystem.
然后我们将会显示确认器错误是怎样在图表层次上报告的。
Then we will show how validation errors can be reported on the diagram level.
诸神的灵魂达到了顶峰，走到外面，并站在天堂的表层，享受着天上的极乐世界。
The souls of gods reach the summit, go outside and stand upon the surface of heaven, and enjoy celestial bliss.
下大雨的时候，山崩会把表层泥土席卷到海里。
When it rains hard, landslides sweep topsoil down to the sea.
血液通常将肌肉产生的热量带到皮肤表层，以汗液的形式排放。
Blood usually carries heat away from active muscles to the surface of the skin, where sweating takes over.
在一个时期，表层和次表层的水流方向相反；表层水流向外海方向流动，靠近底层的水流则向陆地方向流动。
For a time, surface and subsurface current are in opposite directions; flow is seaward at the surface and landward near the bottom.
在一个时期，表层和次表层的水流方向相反；表层水流向外海方向流动，靠近底层的水流则向陆地方向流动。
For a time, surface and subsurface current are in opposite directions; flow is seaward at the surface and landward near the bottom.
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