标引工具书是主题标引时必不可少的参考工具书.Indexing reference books are the essential tools for subject indexing.摘要标引关键词是科技论文的基本要求.Indexing of key words is required by sci - tech research papers.自由标引本身存在着缺点,克服缺点的最佳方法是后控制技术.Free marking has s...
He contrived to make a mess of the whole thing.他挖空心思反而把事情全盘弄糟了.The orchestra contrived to produce some of its best playing for years.这支管弦乐队呈现了精彩的演奏，堪称其多年来的巅峰演奏。'We're not that contrived. We're not that the...
任何发亮的液体都会被认为是碳酸饮料.Any sparking liquid might be confused with a soda.冰箱里有很多碳酸饮料。There are plenty of sodas in the refrigerator.在亚伯达,人们采矿、打井开采石油 、 碳酸钾 、 汽油和天然气.In Alberta people mine and drill for oil, potash, petrol and ga...