单词：cystine stone
单词：cystine stone 相关文章
A gem stone plucked from the earth, the sea, or riverbed, often travels across continents to cutting and polishing workshops; and those are increasingly found in India. Far away, the Belgian city of Antwerp is still king in diamond trading. In these
VOA标准英语2008年（九月）
Song：Turn To Stone Artist：Girls Aloud Don't turn away Keep me holding on Don't turn away Just don't leave me now You're moving in circles Looking for the love that I thought we made While I stand alone Say you wanna be certain Certain that this f
英语热力歌曲
In Puerto Rico many years ago near the Condado Lagoon, there lived a poor fisherman. He lived alone in a hut. His only companion（同伴）was his dog. The fisherman and his dog were devoted to each other. They might be seen strolling（散步)on th
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Research Group Has High Hopes for New TB Vaccine Physicians have long known that the so-called BCG vaccine for tuberculosis does not provide the same level of protection against the disease in all parts of the world. Some also say the vaccine's effec
VOA标准英语2011年(九月)
The story goes that two friends were walking through the desert. During some point of the journey they had an argument, and one friend slapped the other one in the face. 两个朋友结伴穿越沙漠，旅途中二人突然吵了起来，其中一个掴
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今天我们要学的词是stepping stone. Stepping is spelled s-t-e-p-p-i-n-g, stepping; and stone, s-t-o-n-e, stone; stepping-stone. Stepping-stone是为了达到目的而准备垫脚石，敲门砖。阿尔及利亚最近举行议会选举，Alger
英语单词荟萃