I've seen the boy sitting in the dirt eating his own belly button lint.

我亲眼见过那孩子坐在泥堆里吃自己肚脐里的脏东西。

Our clean, sterile, no dirt eating lifestyles could be behind the rise in allergies of all kinds.

我们干净无菌、没有灰尘的饮食习惯可能是各种过敏症增加的背后原因。

“I would add that any new, unnatural behavior, such as dirt eating, should be acted upon quickly, ” Dr. Coger said.

“我想补充一点，任何过去没有的、不自然的行为，比如吃土，都应该迅速采取（干预）行动，”科格博士说。