Long-term accumulation of reserves, especially for contingencies or future needs; substantial savings or provisions built up over time.
那个公司深谙九年之蓄的道理，每年都会拨出一部分利润作为发展基金，以应对市场变动和未来投资。
That company deeply understands the principle of 'nine years' accumulation,' setting aside a portion of its profits annually as a development fund to cope with market fluctuations and future investments.
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