1
pass feces
（pass feces 是常用搭配，意为'排便'）
The patient passed feces into the toilet.
患者将粪便排入马桶。
粪便；屎
先理解核心含义，再看它在真实句子里的用法。
粪便；屎
solid waste discharged from the bowels
The patient passed feces into the toilet.
患者将粪便排入马桶。
通常用复数形式
从肠道排出的固体排泄物
solid excretory product evacuated from the bowels
The doctor asked the patient to bring a small sample of feces for the test.
医生请病人带一小份粪便样本用于检查。
Please clean up the dog's feces in the yard before the children play there.
请把院子里狗的粪便清理干净，然后孩子们再在那里玩。
The vet explained that finding worms in the cat's feces means it needs treatment.
兽医解释说，在猫的粪便里发现虫子意味着它需要治疗。
（pass feces 是常用搭配，意为'排便'）
The patient passed feces into the toilet.
患者将粪便排入马桶。
Feces contain bacteria and undigested food.
粪便含有细菌和未消化的食物。
（feces from 表示来源）
The sample of feces from the patient was analyzed.
来自患者的粪便样本被分析。
Not this
I found a feces on the ground.
Use this
I found feces on the ground.
“feces”是复数名词，不可与不定冠词“a”连用，应直接使用原形表示泛指。
Not this
I need to feces every morning.
Use this
I need to defecate every morning.
“feces”是名词，不可用作动词表示排便，应改为动词“defecate”或短语“pass feces”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
狗粪
The park asks visitors to clean up dog feces.
公园要求游客清理狗粪。
人类粪便
Human feces can contain disease-causing organisms.
人类粪便可能含有致病微生物。
动物粪便
Animal feces in the field can contaminate crops.
田地里的动物粪便可能污染庄稼。
粪便样本
The doctor asked for a feces sample for lab testing.
医生要求提供粪便样本进行实验室检测。
粪便分析
Feces analysis helps diagnose intestinal infections.
粪便分析有助于诊断肠道感染。
Use feces naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
音近'费西'，想象费劲排便排出的稀便，记住feces是粪便。
语域：formal 常见场景：medical reports、clinical documentation 「feces」是正式且偏医学术语，多用于医疗报告、临床记录或学术写作；日常口语中较少用，更常说 poop 或 stool。
feces 的重音在第一音节，读作 /ˈfiˌsiz/；其最后一个音节的读音与 seas、sees 的 /siːz/ 相近，但并非完整押韵，因为重音位置不同。注意 faces、places、spices、services 虽然都以 -ces 结尾，但一律读作 /sɪz/（或 /ɪz/），不是 /siːz/，不要被拼写误导。
Dictionary facts from ECDICT, WIKTIONARY.