A single fallen leaf signals the arrival of autumn; metaphorically, a small indication can reveal a larger trend or forthcoming event.
从市场的一些细微变化中，我们已经能落叶知秋，预感到未来的发展方向了。
From some subtle changes in the market, we can already discern the coming trends, much like knowing autumn from falling leaves.
Era:
Ancient
Frequency:
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