based on principles that you or people in general consider to be right, honest, or acceptable

Morally, you're right, but in practice I don't think it would work. 从道义上讲，你是对的，但在实际中，我认为它行不通。

For a teacher to hit a child is not just morally wrong but also illegal. 教师打孩子不仅在道德上是错误的，而且也是违法的。

She thinks she's morally superior to the rest of us. 她认为自己在道德上比我们其他人高尚。