anal

肛门的医学

The doctor explained that anal bleeding can have several causes.

医生说明肛门出血可能有好几种原因。

龟毛的、吹毛求疵的、一丝不苟的口语，贬义

He's so anal about keeping the kitchen spotless.

他对厨房一定要一尘不染这件事超龟毛。

肛门期的心理学

She described his behavior in terms of the anal stage.

她用肛门期的概念来描述他的行为。

肛交口语

The clinic offers advice on safer sex, including anal.

这家诊所提供安全性行为的建议，也包括肛交。