For others, veganism is a moral imperative.

对于其他人来说，素食主义则是一种道德义务。

This is a moral imperative and a developmental necessity.

这既是道义的需要，也是发展的需要。

Care is a basic moral imperative and people's ethical emotions in certain situations.

关怀是人的基本道德需要，是人在一定情境下产生的道德情感。

And it becomes a moral imperative because it's going to be really hard to live on Mars if we don't fundamentally modify the human body.

之所以会成为道德准则，是因为如果我们不彻底修改人体，那么我们就很难在火星上生存。

While the world fell short of the target, the successes and momentum of 3 by 5 demonstrated that universal access to medicines was possible - and had become a moral imperative.

虽然全世界没能达成目标，“三五”行动的成功和势头表明，全面获得药物是可能的，而且这也成为一项道义上的当务之急。

Apart from an absolute moral imperative, trends such as outsourcing and just-in-time production compel the international community to make sure that no part of the world suffers disproportionately.

撇开单纯的道德约束不谈，外包和及时生产的趋势已迫使国际组织努力确保世界上任何一个地方都不会失去平衡。