Minute fragments of shoot apices are proverbially difficult to culture.微小的茎尖切段通常是难以培养的.This concept has now been replaced, for stem apices, by the tunica - corpus theory.此观点目前已经被原套原体学说所取代....
囚犯撒野闹事，砸毁了所有挡路的东西。The prisoners went on the rampage destroying everything in their way.去年，600名犯人闹事，他们纵火并设置路障。Last year 600 inmates rioted, starting fires and building barricades.警察不分闹事者与观众统统一顿猛击，把人们清除出了足球场。The police, ra...