in a way that shows good moral qualities and behaviour

I see many people who live virtuously, yet suffer from hunger. 我看到很多人过着品行端正的生活，却饱受饥饿的折磨。

in a way that shows too much satisfaction, because you think you have done the right thing

Virtuously, we turn the tempting desserts down but order black coffee. 我们非常正确地拒绝了诱人的甜点，点了黑咖啡。

"Everything I know about her is in my statement," he said virtuously. “我所知道的关于她的一切都在我的陈述中,”他满意地说。