股价和企业价值可能波动，并取决于某些管理者不能控制的因素。
Share prices and the firm's value can fluctuate and it can depend on various factors that managers cannot control.
很有可能这些波动，二氧化硫的大量增加和减少，一次又一次地发生。
It is quite possible that these fluctuations, the huge increase and decrease of sulfur dioxide, happening again and again.
安德森认为，厄尔尼诺现象，也就是今天影响太平洋的气候波动，可能让拉皮塔人更加分散。
El Nino, the same climate disruption that affects the Pacific today, may have helped scatter the Lapita, Anderson suggests.
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