每一年，该系统的精算师都会预测说老年遗属和伤残基金(或称作社会保障)最终会用完所有的钱。
Every year, the system's actuaries project that the Old Age Survivors and Disability fund, otherwise known as Social Security, will eventually run out of money.
排在最佳职业前五位的还包括数学家、保险精算师、统计学家、和电脑系统分析师。这些职业的年薪可达83777美元，是排在末位的几类最差职业年薪（30735美元）的两倍多。
The top five jobs, which include mathematician, actuary, statistician and computer systems, typically pay more than twice as much as the lowest jobs -- $83, 777 compared to $30, 735 per year.
他的另一项贡献是建立英格兰的现代邮政系统、编写了第一种可信赖的保险精算表，以及发明火车头的排障器。
His other contributions included establishing the modern postal system in England, compiling the first reliable actuarial tables, and inventing the locomotive cowcatcher.
他的另一项贡献是建立英格兰的现代邮政系统、编写了第一种可信赖的保险精算表，以及发明火车头的排障器。
His other contributions included establishing the modern postal system in England, compiling the first reliable actuarial tables, and inventing the locomotive cowcatcher.
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