For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.
指出了内消旋体消旋原因

释
不

。利用螺旋
论和稳定
交叉式构象,
地
释了内消旋体消旋
原因。
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是好》 Immanuel Kant described very well the problem with skepticism when he wrote " Skepticism is a resting place for human reason, where it can reflect upon its dogmatic wanderings, but it is no dwelling place for permanent settlement."
康德曾贴切地描述了怀疑论的不足,参见康德的《纯粹理性批判》,他写道:“怀疑论是人类理性暂时休憩的场所,是理性自省
伺将来
出正确抉择的地方,但绝非理性的永久定居地。”
影
界深度游(LSOO)
影
界新知聚焦:自我管理 In America, the answer is clear. People would do just about anything to avoid being left with their own thoughts. Past research, for instance, has found people to be (irrationally) averse to idleness and motivated by busyness.
美国,答案是显而易见的。 人们为了避免独处思考,几乎愿意
任何事情。 举个例子,过去有研究发现,人们(非理性地)厌恶懒惰,并被忙碌所驱使。
Another essential component is rules-based international cooperation, particularly when it comes to containing or dissipating geopolitical threats to global stability.
要想得到发展和安全,每个国家必须从我
起,管理好本国事务。特别是那些负有领导责任的国家更要
身作则。这一方面包括一个国家呀理性地支持它的人民调整自己
适应自由开放的市场所国有的一些困难。另一重要方面是
规则为基础的国际合作,特别是
一直或消解影响全球稳定的地理政治威胁方面。