You might put this down to the Modigliani-Cohn effect in reverse, since nominal bond yields have also fallen.
你或许会反过来将它归因于Modigliani-Cohn效应,因为名义债券收益率也下降了。
经济学人(汇总)
Buddy Holly (killed in a plane crash), Amedeo Modigliani (dead of tubercular meningitis at 35), Wilfred Owen (slain in action a week before the armistice in 1918): such premature and cruel exits are tragic.