参考資料

https://answers.yahoo.com/question/index?qid=20090613073510AA9qYRu

https://police.fandom.com/wiki/UK_Police_Ranks

https://foreigncrimedrama.com/uk-ranks-interpreted/

https://idioms.thefreedictionary.com/have+a+thing+for+(something)

https://idioms.thefreedictionary.com/have a thing for (someone)

https://en.wikipedia.org/wiki/Law_%26_Order%3A_UK

https://idioms.thefreedictionary.com/duty+calls