My dog ate it. It's true. Look, I brought a stool sample.
作业被狗给吃了。真的，你看，我带来了粪便样本。
We'll have to take a stool sample and analyze that as well.
我们还必须采一些粪便的样本来做分析。
Here is a box for your stool sample.
这是你大便的采样盒。
A single stool sample for ova and parasites was negative.
一次大便找虫卵和寄生虫阴性。
A single stool sample for ova and parasites was negative.
一次大便找虫卵和寄生虫阴性。
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