另一个让人稍有担心的问题是水下杂物会钻进涡轮机叶片中。

Another slight concern is submerged debris floating into the blades.

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这些（气泡）会引起振动并损坏涡轮机的叶片。

These can cause vibration and damage the blades of the turbines.

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这些（气泡）会引起振动并损坏涡轮机的叶片。

These can cause vibration and damage the blades of the turbines.

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