食土的习俗，食土的行为很常见，或许是因为“干净的”泥土似乎能给予人体一些保护，免受寄生物、病原体的侵扰。

The practice of dirt-eating, or geophagy, is common, perhaps because "clean" dirt appears to impart some protection against parasites and pathogens.Cynthia Graber reports.

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食土的习俗，食土的行为很常见，或许是因为“干净的”泥土似乎能给予人体一些保护，免受寄生物、病原体的侵扰。

The practice of dirt-eating, or geophagy, is common, perhaps because "clean" dirt appears to impart some protection against parasites and pathogens. Cynthia Graber reports.

youdao

有种习俗令科学家困惑不已：食土（吃泥土）的习惯。

There’s a habit that’s had scientists puzzled: the practice of geophagy—eating dirt.

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