Arguably, the recent surge in wheat prices (prompted by an Australian drought) is an early indicator of the potential for climate change to disrupt food output.
兹有事例可以证明：近期小麦价格的高涨(由澳大利亚的干旱所引发)正是对气候改变影响食物产出这种潜在可能的先兆。
Animals are regarded by scientists as a valuable indicator of climate change because they can rarely adapt rapidly enough for change to pass unnoticed.
科学家们把动物作为一个反应气候变化的有价值的指标，因为它们几乎不能足够迅速地适应那些并不引人注意的变化。
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