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Microfluidics is the science and technology of systems that process or manipulate small 10~(-9 to 10~(-18) litres amounts of fluids, using channels with dimensions of tens to hundreds of micrometres.

微流控学是在微米级结构中操控纳升至皮升体积流体的技术与科学，是近十年来迅速崛起的新交叉学科。

The most common form of UWB is Impulse Radio,which communicates using very short pulses,typically on the order of hundreds of picoseconds.

脉冲无线电是超宽带的最主要形式，它使用脉冲宽度级数为几百皮秒的短脉冲进行通信。

The temporal evolution in transient reflectivity change ?嵇/R is composed of two relaxing parts: a fast component with time sub picoseconds and a slow component with time constant ranging from tens of ps to hundreds of ps.

瞬时反射率的变化主要由两个部份所构成：弛缓时间在次皮秒级(sub-picosecond)的快弛缓行为，以及弛缓时间在数十到百个皮秒的慢弛缓行为。

8Ps for native and NaBH〓 chemically modified reaction centers, and the transfer process from H〓 to the final electron acceptor Q〓 occurs in about hundreds of picoseconds. On the other hand, the energy transfer from excited B was obviously slowed down in the pheophytin-exchanged RC. By considering the change of free energy of ion pair P〓Phe〓, it could be expected there might exist alternative pathway of charge separation and electron transfer in pigment-exchanged reaction center. In addition, the influence of acid environment on the ultrafast dynamics of reaction center was also experimentally observed, which shows an evident difference from that of in native RC, and further investigation should be carried out to elucidate the origination.

在色素置换后的反应中心中，以B为起点的能量传递较天然RC的情况明显减慢，约在450fs左右，考虑到置换后的反应中心中P的自由能有所提高以及其仍然保持的光化学活性，这一较慢的能量传递也可能预示着还存在着其它的能量传递通道；另外，还对酸性处理的反应中心中的超快光动力学过程进行了尝试性的研究，发现由于色素分子的聚集以及蛋白环境的改变，BChl分子的激发态动力学过程有着明显不同于天然反应中心的情况。

In China and India, real wage growth has lifted hundreds of millions of 'proletarians' out of abject poverty.

在中国和印度，实际工资增长已经使数亿&无产者&摆脱了赤贫状态。

It doesn't seem much but with hundreds of volunteers it really adds up. In 2003, on the original site of Distributed Proofreaders, about 250-300 people were working each day, producing a daily total of 2,500-3,000 pages, the equivalent of two pages a minute.

看上去数量不多，但是几百个志愿者都这样做，就很可观了。2003年，美国古登堡计划的校对网站上，每天大约有250-300人在工作，一天可以完成2500-3000页，相当于每分钟两页。

PSIFEYE does not completely replace human inspectors, but instead enhances the speed and accuracy of the proofreading process by inspecting product hundreds of times more quickly than proofreaders and freeing them from the type of tedious, repetitive review work that routinely results in errors.

PSIFEYE不能完全代替人检查，而是增强了产品检测数百次的速度比校对和摆脱单调乏味，重复审查工作键入它们的速度和准确性的校对过程中，在常规错误的结果。

That hark back to some event long gone, or base their justification for killing on claims of some supposed historical right to a bit of land, or redress for a wrong done hundreds of years ago.veduchina

他们总是抓住过去的一些事情不放，或把一小片土地的历史归属问题作为他们进行杀戮的理由，更或是为了修正几百年前的所谓的历史错误。

Look at all the terrorists and militant groups that hark back to some event long gone, or base their just ification for killing on claims of some supposed historical right to a bit of land, or redress for a wrong done hundreds of years ago.

看看那些恐怖组织和激进分子，他们总是抓住过去的一些事情不放，或把一小片土地的历史归属问题作为他们进行杀戮的理由，更或是为了修正几百年前的所谓的历史错误。

The problem is made worse by the fact that most of the hundreds of treaties meant to solve global environmental concerns have separate secretariats, which makes cooperation among the collection of bodies difficult, to put it mildly.

为了解决全球环境问题制定了数百项条约，但这些条约组织大多数各自为政，很难实现彼此合作，这种状况－－可以毫不夸张地说－－使得联合国环境规划署面临的问题变得更加严重。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷