excrement可數嗎

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。