很多环戊烷的衍生物在这个范围也出现吸收.Many cyclopentane derivatives also absorb in this region.后者是由二氧杂环戊烷中活化较弱的C -H 键离解而产生的.The latter arises from abstraction of the somewhat lesser activated C - H bond in the dioxolane.控制缩合反应的温度,还得到一种苯并环...
Keep your options open and everything will fall into place.给自己留出选择的余地，一切将会水到渠成。It's a trap too many people fall into.太多人都掉进了这个陷阱中。The problems generally fall into two categories.问题大致分成两类。...
The MP described the killings as a blasphemy before God.这位下院议员称这些谋杀是在上帝面前的公然亵渎。The killings in Vilnius have precipitated the worst crisis yet...维尔纽斯的几起谋杀事件导致了迄今为止最严重的危机。Allegations had appeared in the press implicating t...