规矩;礼仪;行为准则
the acceptable or expected ways of doing something
I hate going to funerals, but you must observe the decencies (= it is something you should do). 我讨厌参加葬礼，但这是基本的礼仪不得不去。
One of the decencies he showed them was to ensure that they got home safely each night.
They have rejected the decencies and formalities of a tried and tested system of government and replaced it with their own rules.
These decencies must be protected, not destroyed.
None of the decencies has been observed.
See also: decency