Thus, four years after the crisis erupted, methods for measuring and assessing economic health remain alarmingly inadequate. As any pilot knows, flying without radar or accurate weather forecasts is likely to end in a crash.
因此，在危机爆发已过去四周年之际，度量和评估经济健康度的方法仍显得极不完善。正如飞行员所熟知的，没有雷达和准确的天气数据，飞机很容易坠毁。