信写好后把它装进空白信封里封好。Write your letter and seal it in a blank envelope.当他们判定我们有罪时，我的脑子顿时一片空白。When they found us guilty, I just went blank.用铅笔向上短短地勾画几道来填充空白。Fill in gaps by using short, upward strokes of the pencil....
The sky this morning is a mosaic of blue and white.今天早上的天空是幅蓝白相间的画面.I was admiring the exquisite workmanship in the mosaic.我当时正在欣赏镶嵌画的精致做工.Major works of painting, sculpture, mosaic and architecture were examined in situ...
Costa Rica becomes a signatory to the Buenos Aires copyright treaty.1916年,哥斯达黎加成为布宜诺斯艾利斯版权条约的签字国之一.He fled to Costa Rica to avoid military service.他逃到了哥斯达黎加以逃避服兵役。...banana plantations in Costa Rica.哥斯达黎加的香蕉种植园Here, a fe...
Non - basic nitrogen - containing series include pyrroles, indoles, carbazoles and benzcarbazoles.不含碱性氮的化合物包括吡咯 、 吲哚 、 咔唑和苯咔唑.Fig 3 Excitation and emission spectra of indoles and its derivative in DMSO.图3吲哚及其衍生物的DMSO溶液的激...
A ragged shout went up from the small crowd.这一小群人发出了刺耳的喊叫。A ragged little boy begged his bread along the street.一个衣衫褴褛的小男孩沿街乞讨。In the corridor were four dirty, ragged bundles, just identifiable as human beings...走廊里有4团脏兮...
这种预糊化面粉有时也混合以瓜尔豆面粉或褐藻酸盐.Such pregelatinized flours are sometimes blended with guar flour or alginates.目的研制富含褐藻酸寡聚糖的酸奶.Objective To develop acidophilous milk enriched with alginic acid oligosaccharide.目的优选昆布中褐藻酸的最佳提取工艺.Ob...