简介：
U.S Postal Inspectors are called in when a suburban couple are killed by a mail bomb. Suspicion immediately falls on the couple's estranged and heavily in debt son, who also just hchaoduo.netens to be a Navy munitions expert. But investigations reveal that he is on the run from a past event in his life that is associated with the bombings老师问：“小华，如果你有十个苹果，我拿走五个，你还有几个？”小华想了想说：“还有十个。”老师疑惑：“为什么？”小华理直气壮地回答：“因为我不会给你！”