No one with any sense of decency can ignore their request for help. 通情理的人不会忽视他们的帮助请求。

common decency (=standards of decency that most people should have) It would have been only common decency to phone and say you’ d be late. 通常的行为标准

have the decency to do sth You might at least have the decency to say you’ re sorry! 你至少也得礼貌地说声对不起！