The US sovereign-debt market shows no similar evidence of having reached a limit yet. But bond markets do not issue many early warning signals: witness the sudden run-up of yields in Italy and Spain a year ago.
美国主权债务市场则并未出现触及极限的迹象。但债券市场并不会给出多少早期警示信号：一年前意大利和西班牙债券收益率飙升就是明证。