它仍然是在反应中生成过渡状态的杂环的实例.It represents an example of a heterocycle being formed as transient species.在反应过程中被还原的杂环(46)可以方便地分离出来.The reduced heterocycle 46 conveniently separates out during the reaction.亚胺基杂环丙烷季铵盐的阳离子,一定是按协同反应...
边门两旁,是两株瘦小的苹果树那多节的桠枝.Two stunted apple trees raised their gnarled andbranchesside of the wicket gate.左边脊柱多节的赘生物是由退变性骨关节炎引起的.The knobby excrescences at the left side of this vertebral column are due to degenerative osteoa...
A meltdown at the reactor had only just been avoided.险些发生核反应堆熔毀事故.Urgent talks are going on to prevent the market going into financial meltdown during the summer.正在进行紧急会谈，以防止市场在夏季出现金融危机。meltdown on the New York Stock Exc...