Other scientists have looked at materials like leaf compost or manure, while Professor Brown favors composts high in iron content, like the sludge from wastewater treatment.

其他科学家们寄希望于树叶堆肥或粪肥一类的物质，而布朗教授更偏爱铁含量较高的堆肥，例如来自废水处理过程中的污泥。

youdao

No other food has so high an iron content.

没有别的食物有这么高的含铁量。

youdao

These vegetables are often very high in iron content.

这些蔬菜当中的含铁量往往非常高。

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One recent study of more than 450 Sun-like stars within about 325 light-years of Earth indicated most had high iron content in their photospheres, or on their surfaces - again, evidence the stars had gorged themselves on planetary material.

BBC: Star 'eats' a planet