大便动词的英语怎么说

"大便动词" 指的是描述人体排便这一过程的动词。在英语中，这类动词通常是以 "to defecate" 或 "to have a bowel movement" 为主。
"To defecate" 的来源是拉丁语 "defecare"，意思是 "排除"。"To have a bowel movement" 则是一种非正式的说法，指的是大便的过程。
一些示例句子如下：
I need to use the bathroom. I think I need to defecate.
She's been constipated for a few days, but she finally had a bowel movement this morning.
The patient is having difficulty defecating and may need a laxative.
对应中文翻译:
我需要上厕所，我觉得我需要排便了。
她几天没有大便了，但今天早上终于有了。
病人排便困难，可能需要服用通便药。