I keep a stock of cassette tapes describing various relaxation techniques.我收集了一些介绍各种放松技巧的卡带。She is good at describing things or expressing ideas.她善于描述事物或表达思想.He wrote a reference for him, describing his reliability and t...
He told her about the death, describing the events in as neutral a manner as he could.他告诉了她这次死亡事故的情况，描述经过时尽可能不掺杂个人感情。She broke down describing how she was arrested for refusing a breath test...她在叙述自己如何因为拒绝接受呼吸测试而被捕时再也控制不...
They forced thousands of peasants into their reactionary armies.他们迫使成千上万的农民参加他们的反动军队.The reactionary ruling clique was torn by internal strife.反动统治集团内部勾心斗角,四分五裂.Some of the labour leaders were also questioned by the reac...
方法: 用溴代及胺化反应合成了四甲基吡嗪衍生物.METHODS: The target compound was prepared by the bromination and amination reaction.论述了三丙酮胺纯度对加氢和还原胺化反应的影响.The effects of triacetoneamine concentration on hydrogenation and amination were discusse...