He does also accept that his ration coupons should be tradeable.

他的确也承认，他的“配给券”应该是可交易的。

They were made in highly liquid tradeable instruments, so this is scalable to the range of billions.

他们在高流动性可交易的仪器，这是升级到范围的数十亿美元。

But should the US's sovereign debt take a hit, the value of these securities as tradeable assets would be threatened as well.

但哪天如果美国的主权债务遭到打击，那么这些债券价值一样面临风险。

A good example of what many (though not all) economists would consider a mistake has been the decision to go for tradeable emissions permits whose prices have proved disturbingly unstable.

许多(尽管并非所有)经济学家都认为是一个错误的恰当例子是：决定推行可交易的排放权。令人不安的是，事实证明，排放权价格非常不稳定。