氢氧根离子有一个负电荷。

The hydroxyl ion has a negative charge .

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氢氧根离子有一个负电荷。

The hydroxyl ion has a negative charge.

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负离子是一种带负电荷的空气离子。

The anion is one kind of air ion with negative electric charge.

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负离子是一种带负电荷的空气离子。

The anion is one kind of air ion with negative electric charge.

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