萨缪尔森解释道，“有人说什么‘一课经济学’，我看呐，咱还是回到第二课吧。”
When someone preaches ‘Economics in one lesson’ I advise: Go back for the second lesson.
咱姐妹二人去打秋千。
由丙二腈经两步反应合成出了标题化合物——3-氨基-4-氯肟基呋咱。
The title compound 3-amino-4-chloroximinofurazan (ACOF) is synthesized by using dicyanopropane as initial material through two steps reaction.
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