Economists call it " deadweight loss" and they estimate that up to 30% of the value of all gifts is wasted.

经济学家称之为“无谓损失”，他们估所有礼物中有高达30%的价值了。

Economists call this " deadweight loss" and they estimate that up to 30% of the value of all gifts is wasted.

经济学家称之为" 无谓损失" ，他们估所有礼物中有高达30%的价值了。

The missing 10% is what economists call a deadweight loss: a waste of resources that could be averted without making anyone worse off.

这中间10%的差别就是经济学家们所谓的“额外损失”：这种资源可以在不使任何人损失钱的情况下得以避免。

To him this plane is nothing but a giant tube-full of anonymous deadweight, supported in the air by a handful of sparking plugs, and guided to its destination by a scrap of electricity.

对他来说，这架飞机只不过是一个巨大的管子， 里面装满了无名的自重，由一把火花塞支撑在空中，并由一点电力引导到目的地。