“粪便”造句

钙通过尿液和粪便排出体外。
Calcium is excreted in the urine and stools.

幼虫会连同粪便排出.
The larvae may be excreted in the faeces.

粪便含氮，而正是氮可以肥化荒芜的土地。
The faeces contain nitrogen and it is that which fertilises the desert soil.

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