It was unscrupulous of their lawyer to withhold evidence.

他师隐瞒证据是不道德。

He won't do that if tergiversation is immoral.

如果背叛是不道德，他就不会做。

Gullible shoppers are easily duped by unscrupulous advertisers.

不坚定消费者很容易被不道德广告商蒙骗。

It’s immoral to sleep with someone of you’re not in love.

你如果不爱一人却与其同居,这是不道德。

Telling lies is wrong.

说谎是不道德。

It is wrong to steal.

偷窃是不道德。

Waste of food is wicked.

糟蹋粮食是不道德。

Most of our social problems would be solved if we could somehow get rid of the immoral, crooked, and feebleminded people.

如果除去那些不道德、欺诈和意人，我多数社会问题就会迎刃而解。