锌是其中最丰富的微量元素在人体中，仅次于铁。

Zinc is one of the most plentiful trace elements in the body, second only to iron.

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从里程长度来看，它仅次于日本高铁系统，位居第二。

It is second only to Japan's high-speed system in terms of scale.

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从里程长度来看，它仅次于日本高铁系统，位居第二。

It is second only to Japan's high-speed system in terms of scale.

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