由于外汇波动的缘故，我们的有效税率在季度与财政年度之间变化非常大。

Our effective tax rate can vary significantly between quarters and fiscal years as a result of foreign currency fluctuations.

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海泽尔指出，亚太地区还面临一些不确定因素，包括气候变化、粮食和能源价格上涨、外汇波动，以及发达国家需求迟滞等等。

Heyzer says the region faces uncertainties, including climate change, rising food and energy costs, foreign exchange volatility, and sluggish demand in developed economies.

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在过去十年中，为了保护自己免受资本流动和商品价格的波动影响，储备了大量外汇。

Many countries have done this in the past decade to protect themselves against fluctuations in capital flows or commodity prices.

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