他去大便了。
按照兽医的要求，在去他办公室之前，我收集了大便样本，将它装到一个塑料容器中。
Following the vet's instructions, I collected a stool sample and dropped it in a plastic container before we left for his office.
按照兽医的要求，在去他办公室之前，我收集了大便样本，将它装到一个塑料容器中。
Following the vet's instructions, I collected a stool sample and dropped it in a plastic container before we left for his office.
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