However, an economic model is not an accurate blueprint but an analytical simile. 然而，经济模型不是一幅准确的蓝图，而是一个分析的明喻。
The world has witnessed a proliferation of financial bubbles and extreme economic instability that cannot be explained by any of the established macroeconomic models. 世界已经见证了金融泡沫的繁衍与极端的经济不稳定，而任何现有的宏观经济模型都无法解释这些现象。
