道义的英文：
principle

It's a tricky ethical question.
这是一个微妙的道义问题。

Our government have moral obligations to keep our safety.
政府在道义上有责任保护我们的安全。

Honour is often influenced by that element of pride which plays to large a part in its inspiration.
道义常常受自尊心的影响，自尊心对于道义的激发有着巨大的作用。

To constrain by physical, legal, social, or moral means.
强制，强迫通过体力、法律、社会或道义的手法强迫、强制

While the morality of our mission was dear, the legality was not.
尽管我们任务的道义性是清楚的，其合法性却是不明确的。

In Chinese folklore, this is the story of Letting Cao Cao off for Old Time's Sake on Huarong Trail
所谓“华容道义释曹操”，指的就是这件事。

Prisonple do not mainly influence even the principled; we talk on principle, but we act on interest.
道义，甚至对于有道义之士也不会有重大影响；我们虽然满口仁义道德，但我们却按照利害来行动。

Honor and opportunity in life I hold dear; morality and principle I hold dearer.
我珍爱生活中的荣誉与机遇，但更珍视生活中的道义与原则。

The question of whether military force can be used ethically is one of the oldest and most difficult in history
军事力量能否被合乎道义地使用是历史上最古老的也是最困难的道德问题之一。

We cannot buy our security, our freedom from the threat of the bomb by committing an immorality..
我们绝不能靠牺牲道义去换取自身的安全与自由免于核弹的威胁……

principle of discrimination
区别原则[指战时区别军事/非军事目标]

Adhesion to the principle of independence and abstract is infraction of the principle of honesty.
固守独立抽象原则是有悖于诚实信用原则的。

He was a man of the highest principles.
他是个道德崇高的人。

To instruct in a body of doctrine or principles.
传授以教条或信条的方式来教授、教导

The principle or law that orders the universe.
（佛教的）法约束天地万物的规则或法律