单词：heptavalent
said of heptad elements or radicals.
单词：heptavalent 相关文章
Child trafficking is rampant in Southeast Asia, with hundreds of thousands of children caught up in this lucrative and shadowy business. The reporter looks at the situation in the Philippines, where poverty is high and jobs are scarce, and unscrupulo
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By Margaret Besheer Irbil 04 December 2006 Former Secretary of State James Baker, co-chairman of Iraq Study Group, walks past with Vice President Dick Cheney, after meeting with President Bush, 13 Nov 2006 For weeks, the American media has been buzz
2006年VOA标准英语（十二月）
今天我们要学的词是equivalent。 Equivalent, 意思是相当于，等同于。《华盛顿邮报》报道说，9/11恐怖袭击事件以来， In Washington and the surrounding areas, 33 building complexes for top-secret intelligence work are
英语单词荟萃
与数字有关的英语词根总结 milli-【千分之一】例：milliampere（毫安）=milli（千）+ampere（安培） centi【百分之一】例：centimeter（厘米）=centi（百分之一）+meter（米） deci【十分之一】例：decibe
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