Anduril, a younger firm that makes autonomous weapons, is currently raising $2.5bn at a valuation of $28bn.

Anduril， 一家制造自主武器的年轻企业，目前正以280亿美元的估值筹集25亿美元的资金。

For investors around the world, a hefty proportion of recent decades' high returns has come from ballooning stock valuations.

对于全球投资者而言，近几十年的高额回报中，很大一部分源自股票估值的膨胀。

Last summer Helsing raised €450m ($468m) at a valuation of $5.4bn, making it one of Europe's most valuable startups.

去年夏天， Helsing以54亿美元的估值筹集了4.5亿欧元（合4.68亿美元），使其成为欧洲最有价值的初创企业之一。

America boasts three defence-tech " unicorns" , private firms with a valuation of more than $1bn, if you count SpaceX, Elon Musk's rocket-and-satellite company.

美国自豪地拥有三家国防科技“独角兽”企业， 即估值超过10亿美元的私人公司，若将埃隆·马斯克的火箭与卫星公司SpaceX计算在内。