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。

youdao

The highest dune here soars to 380 metres, and tinted red by its high iron content it glows almost crimson at dusk.

BBC: The ghostly shore of Namibia��s Skeleton Coast

Contaminated water has been abstracted and treated from the mine since 1992 following an drainage burst which caused visible pollution from mine water coloured orange by the high iron content.

BBC: An archive picture of Wheal Jane

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