1·He retained that obsessiveness and excitement, never growing out of them.
他乐此不疲、兴奋异常、从不言弃。
2·This obsessiveness has even led to violent consequences. Last week, police in France said that they had thwarted a plot by a boy, 13, to murder his school teachers.
这种痴迷甚至导致暴力性后果，法国警方上周表示，他们挫败了一个13岁男孩企图谋害本校老师的阴谋。