| 单词 | 在实验室 |
| 释义 | 〔pan〕"But Dr. Brett cautioned that what sounds exciting from the Moon does not always pan out in the laboratory"(London Daily Telegraph, December 14, 1972). If Dr. Brett had been talking about hunting for gold on the moon,there would be a solid connection between his use of the expressionpan out and its original use in gold mining. Pan out, like the verb pan itself, comes from the noun pan in the sense "a shallow circular metal vessel used in washing gold from gravel.”The expressionpan out was used in a variety of senses, including "to wash gold-bearing earth in a pan"; "to obtain gold by washing ore in a miner's pan";and with reference to a mine or mineral-bearing soil, "to produce gold or minerals.”From such literal usagespan out was transferred to other situations. In Frederick Whymper'sTravel and Adventure in the Territory of Alaska, published in 1868, we are told that “‘It panned out well’ means that ‘it gave good returns.’”All these uses occurred first in American English,making the expression a true Americanism.“可是布莱特博士告诫说来自月球的听起来令人激动的消息并不总会在实验室获得成功”(伦敦每日电讯报 1972年12月14日）。 如果布莱特博士谈论的是关于在月球上寻找金子，那么，在他表达panout 这个用法和这个短语在金矿开采方面的原始用法就会有一种固定的联系。 Pan out 象动词 pan 本身一样来源于名词 pan ， 意思是“一个浅而且圆的金属器皿，用来从矿砂中淘洗金子”。pan out 的表达用在各种意思中， 包括“在淘金盘中淘洗含金的泥土”，“在矿工的淘金盘里淘洗矿砂得到金子”，并且与矿井或含矿土壤有关，“产金子或矿物”。在这样的文学用法中，pan out 被借用于其它情况。 在弗雷德里克·怀姆坡1868年出版的在阿拉斯加旅游历险 中， 我们得知"It panned at well"意思是“得到好的回报”。所有这些用法都首先出现在美国英语中，表达了一种真正的美国主义〔lectin〕Any of several plant glycoproteins that bind to specific carbohydrate groups on the plasma membrane of cells, used in the laboratory to stimulate proliferation of lymphocytes and to agglutinate red blood cells.植物凝血素：任一种与细胞质膜上的特定碳水化合物结合的植物糖蛋白，在实验室中用来加速淋巴细胞的繁殖和红血细胞的凝结〔einsteinium〕A synthetic transuranic element first produced by neutron irradiation of uranium in a thermonuclear explosion and now usually produced in the laboratory by irradiating plutonium and other elements. Its longest-lived isotope is Es 254 with a half-life of 276 days. Atomic number 99; melting point 860°C. See table at element 锿：一种人工合成超铀元素，在一次热核子反应的铀中子辐射中首次产生。 现在通常通过在实验室里辐照钚和其它元素而产生，其最不易衰变的同位素是Es254， 它的半衰期为276天，原子序数99；熔点860°C 参见 element〔hybridoma〕A cell produced in the laboratory from the fusion of an antibody-producing lymphocyte and a myeloma tumor cell. It proliferates into clones that produce a continuous supply of a specific antibody.杂种细胞：在实验室里制造的一种由一个能产生抗体的淋巴细胞与一个骨髓瘤细胞结合而成的细胞。它能繁殖成一种能不断提供某种抗体的无性系〔perform〕Sophisticated laser experiments are performed regularly in the laboratory.复杂的激光实验定期在实验室举行。〔clone〕To establish and maintain pure lineages of (a cell) under laboratory conditions.纯系生殖：在实验室条件下建造或保持纯正的（细胞）世系 |
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