But some scientists fear that might not be enough.

但是一些科学家担心这样的投入可能还是不够。

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So far, wheat rust has not caused the disaster that scientists fear.

迄今为止，小麦锈病并未造成科学家们所害怕的那种大灾难。

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But scientists fear there may not be enough food so close to the coast.

但是，科学家们担心这片海岸附近没有足够的食物以供这些海象们生存。

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But scientists fear there may not be enough food so close to the coast.

但是，科学家们担心这片海岸附近没有足够的食物以供这些海象们生存。

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