To children and the educational cause you ve contributed your sincere heart.

为孩子，为事业，您献出一片赤诚的心。

youdao

They did this in the sincere belief that they were serving a greater cause, through an elite intelligence service, the KGB, which fathered and mothered them and appeared to trust them totally.

他们认为通过克格勃，自己在服务于一项伟大的事业。而克格勃如同父母亲们一样对待他们，信任他们。

youdao

Changing is obvious thing in the world, Cause we are changing, but it should be with the most sincere best aspiration for the wellbeing of all and everyone.

世界改变是显而易见的事情，因为我们正在发生变化，但它的改变前提应该是满足人们最真挚的愿望，让人们生活得更幸福，我自己也在为此改变。

youdao

Gay marriage was always certain to cause a furious row since it challenges sincere religious beliefs, deeply-rooted social conservatism and a mistrust of the metropolitan elite who are blamed for imposing an ideology of legally enforced equality on the country.

BBC: Why gay marriage has exposed Conservative divisions