He began to question the ethics of his position.
他开始对他的立场是否符合道德准则提出质疑。
Competitors must follow the outdoor ethics of LEAVE NO TRACE.
参赛选手必须遵循“不留痕迹”的户外运动准则。
Professional ethics of library; Library association; U. S. A.
图书馆职业道德； 图书馆协会；美国。
Professional ethics of library; Library association; U. S. A.
图书馆职业道德； 图书馆协会；美国。
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