They sense in the viscera the fragile and transient character of their current economic order.他们切身感到现行经济秩序非常脆弱且不能持久。That singer can't last. He's a flash in the pan.那歌手不能持久，他只是昙花一现。Such huge weight losses are not easy to sustain.这样大幅的体重减轻是不能持久的。These colours won't last if exposed to the sun.在阳光曝晒下，这些颜色不能持久。