Galvanized roofs, which contain zinc, are likewise not appropriate for potable collection systems.

镀锌屋顶，含有锌，也同样不收取恰当地食系统。

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Galvanized roofs, which contain zinc, are likewise not appropriate for potable collection systems.

镀锌屋顶，含有锌，也同样不收取恰当地食系统。

youdao