Her father suffered a serious allergic reaction, which stopped his heart.
他的父亲遭受严重过敏反应，致使心跳停止。
2
A schoolgirl saved her father's life by kicking him in the chest after he suffered a serious allergic reaction which stopped his heart.
女学生的父亲突发严重过敏反应，心跳停止了，她在他胸口踢了一脚，把父亲救活了。
3
Nuclear release can take place as a result of the nuclear reaction. After the reactor is stopped it is thoroughly cleaned and washed with special deactivating powder.