life time killer

例句：

1. 1. The sudden death of a loved one is a life-time killer.
   亲人突然去世是一种致命的打击。
2. 2. The company's new product is a life-time killer for its competitors.
   该公司的新产品对竞争对手来说是致命的。
3. 3. The accident was a life-time killer for the family.
   这次事故是这个家庭致命的一击。