一层

A surface-modified adsorbent is a support bearing at the surface of a chemically bonded "monomolecular" layer of adsorbing groups, which provides fast kinetics of the recovery and elution of the molecules and ions under study.5–9 SPE by use of alkyl-bonded silica gels has been widely applied in the environmental analysis of polyaromatic hydrocarbons, pesticides, substances of biochemical origin and other organic compounds.

表面改性吸附剂是一种载体，它负载在一层化学键合的单分子吸附性官能团的表层，为所研究的分子和离子的回收和洗脱提供了快速动力。使用含烷基的硅胶的SPE技术已经被广泛应用到芳烃聚合物、农药、生物成因物质以及其他有机化合物的环境分析中。

I told him I had an old slick counterfeit quarter that warn't no good because the brass showed through the silver a little, and it wouldn't pass nohow, even if the brass didn't show, because it was so slick it felt greasy, and so that would tell on it every time.

我对他说，我有一枚两角五分的旧伪币，又旧又光滑，已经不能用了，因为银币已经露出一小块铜，反正人家不肯收了。即使没有把铜露了出来，也不好使用，因为旧得象抹上一层油那样油腻腻的，一眼就给看出来了。

In an instant a space three feet long by two feet broad was cleared, and Dants could see an oaken coffer, bound with cut steel

一霎时，挖开了一块三尺长两尺宽的地面，唐太斯看到了一只橡木钱柜，外面包着一层已被挖破了的铁皮。

In an instant a space three feet long by two feet broad was cleared, and Dantès could see an oaken coffer, bound with cut steel

一霎时，挖开了一块三尺长两尺宽的地面，唐太斯看到了一只橡木钱柜，外面包着一层已被挖破了的铁皮。

An open-faced omelet, often cooked with meat, cheese, or ''.

菜肉馅煎蛋饼一种有馅但无上面一层的煎蛋卷，常和肉、奶酪和''。

Each level of ascension brings forth a new level of thought form that is heard through one's telepathic communication from one's soul, oversoul and God/Goddess/All That Is.

提升的每一层面都展现了新一层思想形态，来自你的灵魂、超灵和神/女神/一切万有而经由你的心灵感应被听到。

Life is like an onion: You peel it off one layer at a time, sometimes you weep.

生活就像个洋葱：你只能一次剥开一层，有时还会流泪。

Life is like an onion;peel it off one layer at a time , and sometimes you weep.

生活就像洋葱；你只能一次剥开一层，有时还会流泪。

Life is like an onion: You peel it off one layer at a time, and sometimes you weep.

生活就像一个洋葱：你只能一次剥开一层，有时还会流泪。

Life is like an onion: you peel off one layer at a time, and sometimes you weep.

生活就像洋葱：你只能一次剥开一层，有时还会流泪。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。