例句：
My main role was to analyse human excrement.
我的主要任務是分析人體排泄物。
Effects of Adding Chicken Excrement to Feed on Production Performance of Growing Pigs.
飼料中添加雞糞對豬育肥效果的影響。
The excrement of sea birds; used as fertilizer.
用作肥料的海鳥糞便。
Study on the Utilization of Maize Straw and Chicken Excrement as Feed.
利用玉米秸稈、雞糞資源開發粗飼料的研究。
When necessary, they also take a careful look at the patient's excrement.
必要時，他們還會查看病人的排泄物。