One felt that he had kept himself unspotted from the world.旁人会感到他没被世俗污染.He was able to get into the building unspotted and unsuspected.他能清白、不受怀疑地走入大楼....
Brass is an alloy of copper and zinc.黄铜是铜锌合金。The worker worked in a little copper with the alloy.工人在合金里搀了一点铜.This is not pure gold ; there is some alloy in it.这不是纯金, 里面混有杂质....
研究了聚氯乙烯 - 吡啶树脂催化乙酰苯胺的N - 烃基化作用,反应条件温和,产品收率令人满意.This paper studied the catalytic N - alkylation of acetanilide with polyvinyl chloride - pyridine resin.方法以3-甲氧基苯硫酚和对甲氧基 - 苯乙酮为原料经溴化、烃基化、环合重排排制得目标产物.Methods: The target comp...
A stanza is, literally, a room.stanza（诗节）的原意为“房间”。The troupe has agreed to be held over for another stanza.剧团已经同意续演一期.The stanza ended, Marcos resumed his comments.演出结束后, 马科斯继续评论....
有一条输气管堵塞了。One of the air-ducts has become blocked.输气管道工程属于生态影响型建设项目.The gas transmission pipeline project belongs to the ecological impact project type.陕西到北京的天然气输气管道建成投产.The Shaanxi - Beijing natural gas pipeline was put...