abolition废除
confusion 混乱
explosion 爆炸
decision决定
impression印象
admission 允许进入
aggression 进攻
concision简洁,
propulsion推进,
expansion扩张,
apprehension担忧,
aversion憎恨,
obsession入迷,
profusion丰富,
collusion勾结,
discussion讨论,
possession拥有.