do harm to / be harmful to / be detrimental to

do harm to / be harmful to / be detrimental to do harm to等于be harmful for do harm to=be harmful 为什么do harm 接to ,be harmful to 详解,为什么 be harmful to 与do harm to的区别 英语翻译be familiar with和be familiar to的区别；do harm to和do harmful do harm to和be harmful to 后面跟to do还是doing do harm to＝do something harmful to 以be harmful to 造句 be harmful to 和be bad for be harmful for与be harmful to的区别? ____it will do us harm or good remains to be