充当

Most of our offices are staffed by volunteers.

我们的大多数办事处都由志愿人员充当工作人员。

Steadying influence when the foal is faced with new sights and challenges.

一位从容的老手会充当一位自信的给予者以及当小马驹面对新景象和挑战的时候

With the enhancement of CO_2, photosynthesis rate and water use efficiency tend to be increased, but transpiration, respiration rate and stomatic conductance tend to be decreased.

CO2是植物生长的源，在植物的整个生育期中充当着重要的角色，参与植物体内的一系列生化反应，对植物的生长产生直接影响。

A form of banking had been practised in Genoa and elsewhere in Italy since the middle of the 12th century. In 1401, a bank the Taula de la Ciutat was founded in Barcelona, in effect to act as the treasury of the government of Catalonia.

自12世纪中叶开始，意大利热那亚和其它地区就已开始实行一种早期银行模式。1401年，一家名为Taula de la Ciutat的银行成立于巴塞罗那，实际上是充当加泰罗尼亚政府国库的作用。

NodD binds to and bends target promoters through anchoring two tandem and individual specific DNA sites. NodD functions as a tetramer, which has a V-shaped main body. Tetrameric NodD is to change its own conformation rather than its oligomeric forms in response to small signal molecules. The specific interaction between each NodD DNA-binding domain and each specific DNA site does not alter itself in spite of naringenin induction, and the induced conformational change is transferred from protein to DNA. Only the DNA conformation incited by induced NodD is competent for RNA polymerase to form the transcriptional open complex. It cannot be excluded that NodD may have protein-to-protein contacts with RNA polymerase, and that the NodD conformational change may also directly contribute to the transcriptional open complex formation. However, the NodD conformational change itself cannot serve as the determinant of the transcriptional molecular switch.

通过研究，我们提出了初步的NodD操纵子激活模型：第一，四聚体是NodD蛋白的功能单位，它通过铆钉两个串联的相对独立的DNA靶位点结合被诱导的启动子；第二，小分子配基的结合是改变NodD四聚体的构象而不是引发不同形式的寡聚体，在我们的模型中，NodD四聚体缩小其V形主体的弯折角，进而缩短其DNA结合功能域的间距；第三，小分子信号的诱导并没有改变NodD的DNA结合域和其DNA靶位点的相互作用，NodD的构象改变由蛋白质经其双铆钉位点传递给DNA；第四，只有诱导状态的NodD激发的DNA构象才能有效地使RNA聚合酶形成转录开放复合物；第五，不排除NodD与RNA聚合酶可能有直接的相互接触位点，不排除NodD构象的改变可能直接有利于RNA聚合酶形成转录开放复合物，但是我们认为NodD构象改变本身不是充当转录激活开关的决定因素。

Some of the more eye-catching costumes — including James Bond's dinner jacket from Thunderball — were modeled by staff at the auction house.

拍卖会场上的工作人员充当模特儿，展示一些较抢眼的戏服，包括「霹雳弹」片中庞德所穿的晚礼服。

L acted as tridentate ligand to chelate with metal atom in enol and ketone form respectively; In complex anion Co atom reside in tetrahedral coordination environment.

钴原子位于八面体配位环境中，配体L分别以烯醇式和酮式充当三齿配体与金属原子配位，配阴离子中Co原子位于四面体配位环境中。

That is,"X" may be bare or unbare.

充当X成分的词语中有些词能带修饰语，有些词不能带修饰语，有些词是两可的。

Hole Opener - The hole opener serves the same purpose as the underreamer, which is to enlarge the previously drilled hole.

扩眼器：扩眼器和井下扩眼器所充当的用途相同，用于扩大以前钻出的井眼。

All those questions showed the contents of land contract right still not completed and systematized, and contracted land market scheme lacked validness and standardization, the value and the price of land use right were devoid of measure and assessment criterion, also some agencies for realizable land turnover developed lag.

因此该文认为政府在当前土地使用制度创新中充当着重要角色，应担当起弥补制度供给不足缺陷的责任。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。