单词:electron contributing group
单词:electron contributing group 相关文章
5. The brain finds it best to keep smell receptors available for unfamiliar and emergency signals such as the smell of smoke, which might indicate the danger of fire. 【分析】复合句。句子主干为 The brain finds it best to keep smell recep
Three Scientists Win Nobel Prize in Chemistry Three scientists have won the Nobel Prize for chemistry for their work to simplify and improve the imaging of biomolecules. 三位科学家因为在简化和改善生物分子成像方面的成就获得了诺
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麻省理工学院发生枪击案 BOSTON, the United States, April 18 (Xinhua) -- The Massachusetts Institute of Technology (MIT) on Thursday night reported on its website that gunshots were reported late in the night on campus. At least one police o