He refused to join the army on moral grounds because he thought it was wrong to kill people.

他以道德为依据拒绝参军，因为他认为杀人是不对的。

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Since her nomination last week, comes this women Sonia Sotomayor has been heavily scrutinized, but not on her possible views concerning abortion,gun control, or any other issue that often divides Americans on political or moral grounds.

VOA: standard.2009.05.31

They were opposed to change unconventional moral grounds.

她们反对改变非传统的道德基准。

耶鲁公开课 - 公正课程节选

This gives rise to some emotion including emotions that could be viewed as moral emotions, like guilt and anger, and again, grounds altruistic behavior in an evolutionary perspective.

这就产生了情绪,包括被视为道德情绪的情绪，例如内疚和愤怒，再一次，这种对利他行为的解释,也是从进化论的角度出发的。

耶鲁公开课 - 心理学导论课程节选

There is a good case for opposing tough mandatory sentences merely on moral grounds.

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The moral grounds for a retrospective compensation deal for Ireland have increased substantially with this new development.

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Among other things, it gave cover to Republicans who otherwise would have felt compelled to oppose the bill on moral grounds.

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