道德原则 meaning in English

ethical principle
moral principle

How many friendships have you known formed upon principles of virtue ?
你知道有多少友谊是按道德原则形成的？
I am well aware that you are a staunch supporter of the work ethic .
我十分了解你是坚决支持勤奋工作的道德原则的。
On the moral principle of the ecological environment
论生态环境道德原则
Thought on the connotation of collectivism moral principles
对集体主义道德原则内涵的思考

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